Subclass |
| Title |
ClassTitle
|
| ===>
ELECTRICITY: MEASURING AND TESTING
|
| | |
300 | ![[Patents]](../gifs/ps.gif) | PARTICLE PRECESSION RESONANCE |
301 | ![[Patents]](../gifs/ps.gif) | . Using a magnetometer |
302 | ![[Patents]](../gifs/ps.gif) | . . To determine direction |
303 | ![[Patents]](../gifs/ps.gif) | . Using well logging device |
304 | ![[Patents]](../gifs/ps.gif) | . Using optical pumping or sensing device |
305 | ![[Patents]](../gifs/ps.gif) | . . Having particular optical cell structure |
306 | ![[Patents]](../gifs/ps.gif) | . Determine fluid flow rate |
307 | ![[Patents]](../gifs/ps.gif) | . Using a nuclear resonance spectrometer system |
308 | ![[Patents]](../gifs/ps.gif) | . . Including a test sample and control sample |
309 | ![[Patents]](../gifs/ps.gif) | . . To obtain localized resonance within a sample |
310 | ![[Patents]](../gifs/ps.gif) | . . By scanning sample frequency spectrum |
311 | ![[Patents]](../gifs/ps.gif) | . . With signal decoupling |
312 | ![[Patents]](../gifs/ps.gif) | . . By spectrum storage and analysis |
313 | ![[Patents]](../gifs/ps.gif) | . . Including polarizing magnetic field/radio frequency tuning |
314 | ![[Patents]](../gifs/ps.gif) | . . With conditioning of transmitter signal |
315 | ![[Patents]](../gifs/ps.gif) | . . With sample resonant frequency and temperature interdependence |
316 | ![[Patents]](../gifs/ps.gif) | . Using an electron resonance spectrometer system |
317 | ![[Patents]](../gifs/ps.gif) | . . Including a test sample and control sample |
318 | ![[Patents]](../gifs/ps.gif) | . Spectrometer components |
319 | ![[Patents]](../gifs/ps.gif) | . . Polarizing field magnet |
320 | ![[Patents]](../gifs/ps.gif) | . . . With homogeneity control |
321 | ![[Patents]](../gifs/ps.gif) | . . Sample holder structure |
322 | ![[Patents]](../gifs/ps.gif) | . . Electronic circuit elements |
323 | ![[Patents]](../gifs/ps.gif) | OF GEOPHYSICAL SURFACE OR SUBSURFACE IN SITU |
324 | ![[Patents]](../gifs/ps.gif) | . Including borehole fluid investigation |
325 | ![[Patents]](../gifs/ps.gif) | . . To determine fluid entry |
326 | ![[Patents]](../gifs/ps.gif) | . For small object detection or location |
327 | ![[Patents]](../gifs/ps.gif) | . . Using oscillator coupled search head |
328 | ![[Patents]](../gifs/ps.gif) | . . . Of the beat frequency type |
329 | ![[Patents]](../gifs/ps.gif) | . . Using movable transmitter and receiver |
330 | ![[Patents]](../gifs/ps.gif) | . By aerial survey |
331 | ![[Patents]](../gifs/ps.gif) | . . For magnetic field detection |
332 | ![[Patents]](../gifs/ps.gif) | . With radiant energy or nonconductive-type transmitter |
333 | ![[Patents]](../gifs/ps.gif) | . . Within a borehole |
334 | ![[Patents]](../gifs/ps.gif) | . . With separate pickup |
335 | ![[Patents]](../gifs/ps.gif) | . . . Employing multiple frequencies |
336 | ![[Patents]](../gifs/ps.gif) | . . . To detect transient signals |
337 | ![[Patents]](../gifs/ps.gif) | . . . To detect return wave signals |
338 | ![[Patents]](../gifs/ps.gif) | . . . Within a borehole |
339 | ![[Patents]](../gifs/ps.gif) | . . . . By induction logging |
340 | ![[Patents]](../gifs/ps.gif) | . . . . . To measure susceptibility |
341 | ![[Patents]](../gifs/ps.gif) | . . . . . To measure dielectric constant |
342 | ![[Patents]](../gifs/ps.gif) | . . . . . Using a toroidal coil |
343 | ![[Patents]](../gifs/ps.gif) | . . . . . Using angularly spaced coils |
344 | ![[Patents]](../gifs/ps.gif) | . With radiant energy or nonconductive-type receiver |
345 | ![[Patents]](../gifs/ps.gif) | . By magnetic means |
346 | ![[Patents]](../gifs/ps.gif) | . . Within a borehole |
347 | ![[Patents]](../gifs/ps.gif) | . Using electrode arrays, circuits, structure, or supports |
348 | ![[Patents]](../gifs/ps.gif) | . . For detecting naturally occurring fields, currents, or potentials |
349 | ![[Patents]](../gifs/ps.gif) | . . . Of the telluric type |
350 | ![[Patents]](../gifs/ps.gif) | . . . . Including magneto-telluric type |
351 | ![[Patents]](../gifs/ps.gif) | . . . Within a borehole |
352 | ![[Patents]](../gifs/ps.gif) | . . . . Combined with artificial source measurement |
353 | ![[Patents]](../gifs/ps.gif) | . . . . With fluid movement or pressure variation |
354 | ![[Patents]](../gifs/ps.gif) | . . Coupled to artificial current source |
355 | ![[Patents]](../gifs/ps.gif) | . . . Within a borehole |
356 | ![[Patents]](../gifs/ps.gif) | . . . . While drilling |
357 | ![[Patents]](../gifs/ps.gif) | . . . Including separate pickup of generated fields or potentials |
358 | ![[Patents]](../gifs/ps.gif) | . . . . With three electrodes |
359 | ![[Patents]](../gifs/ps.gif) | . . . . With nonelectrode pickup means |
360 | ![[Patents]](../gifs/ps.gif) | . . . . Using a pulse-type current source |
361 | ![[Patents]](../gifs/ps.gif) | . . . . . With mechanical current reversing means |
362 | ![[Patents]](../gifs/ps.gif) | . . . . . To measure induced polarization |
363 | ![[Patents]](../gifs/ps.gif) | . . . . By varying the path of current flow |
364 | ![[Patents]](../gifs/ps.gif) | . . . . . Using frequency variation |
365 | ![[Patents]](../gifs/ps.gif) | . . . . Offshore |
366 | ![[Patents]](../gifs/ps.gif) | . . . . For well logging |
367 | ![[Patents]](../gifs/ps.gif) | . . . . . Using a pad member |
368 | ![[Patents]](../gifs/ps.gif) | . . . . . Cased borehole |
369 | ![[Patents]](../gifs/ps.gif) | . . . . . While drilling |
370 | ![[Patents]](../gifs/ps.gif) | . . . . . Using surface current electrodes |
371 | ![[Patents]](../gifs/ps.gif) | . . . . . Using plural fields |
372 | ![[Patents]](../gifs/ps.gif) | . . . . . Between spaced boreholes |
373 | ![[Patents]](../gifs/ps.gif) | . . . . . Using current focussing means |
374 | ![[Patents]](../gifs/ps.gif) | . . . . . . Including a pad member |
375 | ![[Patents]](../gifs/ps.gif) | . . . . . . Including plural current focussing arrays |
376 | ![[Patents]](../gifs/ps.gif) | OF SUBSURFACE CORE SAMPLE |
377 | ![[Patents]](../gifs/ps.gif) | . For magnetic properties |
378 | ![[Patents]](../gifs/ps.gif) | INTERNAL-COMBUSTION ENGINE IGNITION SYSTEM OR DEVICE |
379 | ![[Patents]](../gifs/ps.gif) | . With analysis of displayed waveform |
380 | ![[Patents]](../gifs/ps.gif) | . Electronic ignition system |
381 | ![[Patents]](../gifs/ps.gif) | . . With magnetically controlled circuit |
382 | ![[Patents]](../gifs/ps.gif) | . . With capacitor discharge circuit |
383 | ![[Patents]](../gifs/ps.gif) | . By simulating or substituting for a component under test |
384 | ![[Patents]](../gifs/ps.gif) | . Using plural tests in a conventional ignition system |
385 | ![[Patents]](../gifs/ps.gif) | . Distributor |
386 | ![[Patents]](../gifs/ps.gif) | . . Dwell (i.e., cam angle) |
387 | ![[Patents]](../gifs/ps.gif) | . . Condenser |
388 | ![[Patents]](../gifs/ps.gif) | . Coil |
389 | ![[Patents]](../gifs/ps.gif) | . Magneto |
390 | ![[Patents]](../gifs/ps.gif) | . Low or high tension lead |
391 | ![[Patents]](../gifs/ps.gif) | . Ignition timing |
392 | ![[Patents]](../gifs/ps.gif) | . . Using a pulse signal technique |
393 | ![[Patents]](../gifs/ps.gif) | . In situ testing of spark plug |
394 | ![[Patents]](../gifs/ps.gif) | . . With cathode-ray tube display |
395 | ![[Patents]](../gifs/ps.gif) | . . Using an illuminating device to indicate spark plug condition |
396 | ![[Patents]](../gifs/ps.gif) | . . With an air gap in series with spark plug to indicate spark plug condition |
397 | ![[Patents]](../gifs/ps.gif) | . . By shorting the plug to ground to indicate spark plug condition |
398 | ![[Patents]](../gifs/ps.gif) | . . . With air gap in ground circuit |
399 | ![[Patents]](../gifs/ps.gif) | . . Wherein a measured electric quantity indicates spark plug condition |
400 | ![[Patents]](../gifs/ps.gif) | . Spark plug removed or tested in a test fixture |
401 | ![[Patents]](../gifs/ps.gif) | . . Using a pressure chamber |
402 | ![[Patents]](../gifs/ps.gif) | . Apparatus for coupling a measuring instrument to an ignition system |
403 | ![[Patents]](../gifs/ps.gif) | ELECTRIC LAMP OR DISCHARGE DEVICE |
404 | ![[Patents]](../gifs/ps.gif) | . Cathode-ray tube |
405 | ![[Patents]](../gifs/ps.gif) | . Vacuum tube |
406 | ![[Patents]](../gifs/ps.gif) | . . Plural tubes in the testing circuit |
407 | ![[Patents]](../gifs/ps.gif) | . . Testing circuit for diverse-type tube |
408 | ![[Patents]](../gifs/ps.gif) | . . Circuit for making diverse test |
409 | ![[Patents]](../gifs/ps.gif) | . . Testing discharge space characteristic (e.g., emission) |
410 | ![[Patents]](../gifs/ps.gif) | . . . With application of current or potential to the discharge control means |
411 | ![[Patents]](../gifs/ps.gif) | . . . . Pulsating or alternating current or potential for the discharge control means |
412 | ![[Patents]](../gifs/ps.gif) | . . . . . Pulsating or alternating current for the anode |
413 | ![[Patents]](../gifs/ps.gif) | . . Shock testing |
414 | ![[Patents]](../gifs/ps.gif) | . Electric lamp |
415 | ![[Patents]](../gifs/ps.gif) | ELECTROMECHANICAL SWITCHING DEVICE |
416 | ![[Patents]](../gifs/ps.gif) | . Voltage regulator |
417 | ![[Patents]](../gifs/ps.gif) | . Thermostat switch |
418 | ![[Patents]](../gifs/ps.gif) | . Relay |
419 | ![[Patents]](../gifs/ps.gif) | . . Reed switch |
420 | ![[Patents]](../gifs/ps.gif) | . . To evaluate contact chatter |
421 | ![[Patents]](../gifs/ps.gif) | . . To evaluate contact resistance |
422 | ![[Patents]](../gifs/ps.gif) | . . To evaluate contact sequence of operation |
423 | ![[Patents]](../gifs/ps.gif) | . . To evaluate contact response time |
424 | ![[Patents]](../gifs/ps.gif) | . Circuit breaker |
425 | ![[Patents]](../gifs/ps.gif) | ELECTROLYTE PROPERTIES |
426 | ![[Patents]](../gifs/ps.gif) | . Using a battery testing device |
427 | ![[Patents]](../gifs/ps.gif) | . . To determine ampere-hour charge capacity |
428 | ![[Patents]](../gifs/ps.gif) | . . . Including an integrating device |
429 | ![[Patents]](../gifs/ps.gif) | . . To determine load/no-load voltage |
430 | ![[Patents]](../gifs/ps.gif) | . . To determine internal battery impedance |
431 | ![[Patents]](../gifs/ps.gif) | . . With temperature compensation of measured condition |
432 | ![[Patents]](../gifs/ps.gif) | . . To determine battery electrolyte condition |
433 | ![[Patents]](../gifs/ps.gif) | . . To compare battery voltage with a reference voltage |
434 | ![[Patents]](../gifs/ps.gif) | . . To determine plural cell condition |
435 | ![[Patents]](../gifs/ps.gif) | . . Having particular meter scale or indicator |
436 | ![[Patents]](../gifs/ps.gif) | . . Including oscillator in measurement circuit |
437 | ![[Patents]](../gifs/ps.gif) | . . Including probe structure |
438 | ![[Patents]](../gifs/ps.gif) | . Using a pH determining device |
439 | ![[Patents]](../gifs/ps.gif) | . Using a conductivity determining device |
440 | ![[Patents]](../gifs/ps.gif) | . . Which includes a dropping mercury cell |
441 | ![[Patents]](../gifs/ps.gif) | . . Which includes a temperature responsive element |
442 | ![[Patents]](../gifs/ps.gif) | . . Which includes an oscillator |
443 | ![[Patents]](../gifs/ps.gif) | . . Having a bridge circuit |
444 | ![[Patents]](../gifs/ps.gif) | . . Which includes current and voltage electrodes |
445 | ![[Patents]](../gifs/ps.gif) | . . Having inductance probe structure |
446 | ![[Patents]](../gifs/ps.gif) | . . Having conductance probe structure |
447 | ![[Patents]](../gifs/ps.gif) | . . . With movable or adjustable electrode |
448 | ![[Patents]](../gifs/ps.gif) | . . . With concentric electrodes |
449 | ![[Patents]](../gifs/ps.gif) | . . . With axially arranged electrodes |
450 | ![[Patents]](../gifs/ps.gif) | . . Which includes particular cell container structure |
451 | ![[Patents]](../gifs/ps.gif) | A MATERIAL PROPERTY USING THERMOELECTRIC PHENOMENON |
452 | ![[Patents]](../gifs/ps.gif) | A MATERIAL PROPERTY USING ELECTROSTATIC PHENOMENON |
453 | ![[Patents]](../gifs/ps.gif) | . In a liquid |
454 | ![[Patents]](../gifs/ps.gif) | . Frictionally induced |
455 | ![[Patents]](../gifs/ps.gif) | . Corona induced |
456 | ![[Patents]](../gifs/ps.gif) | . For flaw detection |
457 | ![[Patents]](../gifs/ps.gif) | ELECTROSTATIC FIELD |
458 | ![[Patents]](../gifs/ps.gif) | . Using modulation-type electrometer |
459 | ![[Patents]](../gifs/ps.gif) | USING IONIZATION EFFECTS |
460 | ![[Patents]](../gifs/ps.gif) | . For monitoring pressure |
461 | ![[Patents]](../gifs/ps.gif) | . . Using a radioactive substance |
462 | ![[Patents]](../gifs/ps.gif) | . . Using thermionic emissions |
463 | ![[Patents]](../gifs/ps.gif) | . . Using a magnetic field |
464 | ![[Patents]](../gifs/ps.gif) | . For analysis of gas, vapor, or particles of matter |
465 | ![[Patents]](../gifs/ps.gif) | . . Using electronegative gas sensor |
466 | ![[Patents]](../gifs/ps.gif) | . . Using a filter |
467 | ![[Patents]](../gifs/ps.gif) | . . Using test material desorption |
468 | ![[Patents]](../gifs/ps.gif) | . . Using thermal ionization |
469 | ![[Patents]](../gifs/ps.gif) | . . Using a radioactive substance |
470 | ![[Patents]](../gifs/ps.gif) | . . Using thermionic emission |
200 | ![[Patents]](../gifs/ps.gif) | MAGNETIC |
201 | ![[Patents]](../gifs/ps.gif) | . Susceptibility |
202 | ![[Patents]](../gifs/ps.gif) | . Calibration |
203 | ![[Patents]](../gifs/ps.gif) | . Curie point determination |
204 | ![[Patents]](../gifs/ps.gif) | . Fluid material examination |
205 | ![[Patents]](../gifs/ps.gif) | . Permanent magnet testing |
206 | ![[Patents]](../gifs/ps.gif) | . Movable random length material measurement |
207.11 | ![[Patents]](../gifs/ps.gif) | . Displacement |
207.12 | ![[Patents]](../gifs/ps.gif) | . . Compensation for measurement |
207.13 | ![[Patents]](../gifs/ps.gif) | . . Having particular sensor means |
207.14 | ![[Patents]](../gifs/ps.gif) | . . . Diverse sensors |
207.15 | ![[Patents]](../gifs/ps.gif) | . . . Inductive |
207.16 | ![[Patents]](../gifs/ps.gif) | . . . . Electrically energized |
207.17 | ![[Patents]](../gifs/ps.gif) | . . . . . Separate pick-up |
207.18 | ![[Patents]](../gifs/ps.gif) | . . . . . Differential type (e.g., LVDT) |
207.19 | ![[Patents]](../gifs/ps.gif) | . . . . . Differential bridge circuit |
207.2 | ![[Patents]](../gifs/ps.gif) | . . . Hall effect |
207.21 | ![[Patents]](../gifs/ps.gif) | . . . Magnetoresistive |
207.22 | ![[Patents]](../gifs/ps.gif) | . . Having particular sensed object |
207.23 | ![[Patents]](../gifs/ps.gif) | . . Plural measurements (e.g., linear and rotary) |
207.24 | ![[Patents]](../gifs/ps.gif) | . . Linear |
207.25 | ![[Patents]](../gifs/ps.gif) | . . Rotary |
207.26 | ![[Patents]](../gifs/ps.gif) | . . Approach or retreat |
209 | ![[Patents]](../gifs/ps.gif) | . Stress in material measurement |
210 | ![[Patents]](../gifs/ps.gif) | . Magnetic information storage element testing |
211 | ![[Patents]](../gifs/ps.gif) | . . Memory core storage element testing |
212 | ![[Patents]](../gifs/ps.gif) | . . Dynamic information element testing |
213 | ![[Patents]](../gifs/ps.gif) | . Magnetic recording medium on magnetized object records object field |
214 | ![[Patents]](../gifs/ps.gif) | . By paramagnetic particles |
215 | ![[Patents]](../gifs/ps.gif) | . . With pattern enhancing additive |
216 | ![[Patents]](../gifs/ps.gif) | . . Flaw testing |
217 | ![[Patents]](../gifs/ps.gif) | . Railroad rail flaw testing |
218 | ![[Patents]](../gifs/ps.gif) | . . Rail joint cutout |
219 | ![[Patents]](../gifs/ps.gif) | . Magnetic sensor within material |
220 | ![[Patents]](../gifs/ps.gif) | . . Sensor supported, positioned, or moved within pipe |
221 | ![[Patents]](../gifs/ps.gif) | . . . Borehole pipe testing |
222 | ![[Patents]](../gifs/ps.gif) | . Hysteresis or eddy current loss testing |
223 | ![[Patents]](../gifs/ps.gif) | . Hysteresis loop curve display or recording |
224 | ![[Patents]](../gifs/ps.gif) | . With temperature control of material or element of test circuit |
225 | ![[Patents]](../gifs/ps.gif) | . With compensation for test variable |
226 | ![[Patents]](../gifs/ps.gif) | . Combined |
227 | ![[Patents]](../gifs/ps.gif) | . Plural tests |
228 | ![[Patents]](../gifs/ps.gif) | . With means to create magnetic field to test material |
229 | ![[Patents]](../gifs/ps.gif) | . . Thickness measuring |
230 | ![[Patents]](../gifs/ps.gif) | . . . Layer or layered material |
231 | ![[Patents]](../gifs/ps.gif) | . . . With backing member |
232 | ![[Patents]](../gifs/ps.gif) | . . Plural magnetic fields in material |
233 | ![[Patents]](../gifs/ps.gif) | . . With phase sensitive element |
234 | ![[Patents]](../gifs/ps.gif) | . . Electrically energized nonforce type sensor |
235 | ![[Patents]](../gifs/ps.gif) | . . . Noncoil type |
236 | ![[Patents]](../gifs/ps.gif) | . . . Oscillator type |
237 | ![[Patents]](../gifs/ps.gif) | . . . . Material flaw testing |
238 | ![[Patents]](../gifs/ps.gif) | . . . Material flaw testing |
239 | ![[Patents]](../gifs/ps.gif) | . . Induced voltage-type sensor |
240 | ![[Patents]](../gifs/ps.gif) | . . . Material flaw testing |
241 | ![[Patents]](../gifs/ps.gif) | . . . . Opposed induced voltage sensors |
242 | ![[Patents]](../gifs/ps.gif) | . . . . Plural sensors |
243 | ![[Patents]](../gifs/ps.gif) | . . . Plural sensors |
244 | ![[Patents]](../gifs/ps.gif) | . Magnetometers |
244.1 | ![[Patents]](../gifs/ps.gif) | . . Optical |
245 | ![[Patents]](../gifs/ps.gif) | . . Plural sensor axis misalignment correction |
246 | ![[Patents]](../gifs/ps.gif) | . . With means to align field sensor with magnetic field sensed |
247 | ![[Patents]](../gifs/ps.gif) | . . Nonparallel plural magnetic sensors |
248 | ![[Patents]](../gifs/ps.gif) | . . Superconductive magnetometers |
249 | ![[Patents]](../gifs/ps.gif) | . . Thin film magnetometers |
250 | ![[Patents]](../gifs/ps.gif) | . . Electronic tube or microwave magnetometers |
251 | ![[Patents]](../gifs/ps.gif) | . . Hall plate magnetometers |
252 | ![[Patents]](../gifs/ps.gif) | . . Semiconductor type solid-state or magnetoresistive magnetometers |
253 | ![[Patents]](../gifs/ps.gif) | . . Saturable core magnetometers |
254 | ![[Patents]](../gifs/ps.gif) | . . . Second harmonic type |
255 | ![[Patents]](../gifs/ps.gif) | . . . Peak voltage type |
256 | ![[Patents]](../gifs/ps.gif) | . . Energized movable sensing coil magnetometers |
257 | ![[Patents]](../gifs/ps.gif) | . . Moving coil magnetometer |
258 | ![[Patents]](../gifs/ps.gif) | . . Fixed coil magnetometer |
259 | ![[Patents]](../gifs/ps.gif) | . . Movable magnet or magnetic member interacts with magnetic field |
260 | ![[Patents]](../gifs/ps.gif) | . Magnetic field detection devices |
261 | ![[Patents]](../gifs/ps.gif) | . . With support for article |
262 | ![[Patents]](../gifs/ps.gif) | . Magnetic test structure elements |
263 | ![[Patents]](../gifs/ps.gif) | . Current through test material forms test magnetic field |
500 | ![[Patents]](../gifs/ps.gif) | FAULT DETECTING IN ELECTRIC CIRCUITS AND OF ELECTRIC COMPONENTS |
501 | ![[Patents]](../gifs/ps.gif) | . Using radiant energy |
502 | ![[Patents]](../gifs/ps.gif) | . In an ignitor or detonator |
503 | ![[Patents]](../gifs/ps.gif) | . In vehicle wiring |
504 | ![[Patents]](../gifs/ps.gif) | . . With trailer |
505 | ![[Patents]](../gifs/ps.gif) | . . Combined with window glass |
506 | ![[Patents]](../gifs/ps.gif) | . Combined with a flashlight |
507 | ![[Patents]](../gifs/ps.gif) | . . With fuse testing attachment |
508 | ![[Patents]](../gifs/ps.gif) | . With electric power receptacle for line wire testing |
509 | ![[Patents]](../gifs/ps.gif) | . Of ground fault indication |
510 | ![[Patents]](../gifs/ps.gif) | . . Of electrically operated apparatus (power tool, appliance, machine, etc.) |
511 | ![[Patents]](../gifs/ps.gif) | . Of electrically operated apparatus (power tool, appliance, machine, etc.) |
512 | ![[Patents]](../gifs/ps.gif) | . For fault location |
513 | ![[Patents]](../gifs/ps.gif) | . . Where component moves while under test |
514 | ![[Patents]](../gifs/ps.gif) | . . . By exposing component to liquid or gas while under test |
515 | ![[Patents]](../gifs/ps.gif) | . . . Using a particular sensing electrode |
516 | ![[Patents]](../gifs/ps.gif) | . . . . Metal chain |
517 | ![[Patents]](../gifs/ps.gif) | . . . . Wire bristles |
518 | ![[Patents]](../gifs/ps.gif) | . . . . Metal pellets or beads |
519 | ![[Patents]](../gifs/ps.gif) | . . By capacitance measuring |
520 | ![[Patents]](../gifs/ps.gif) | . . By frequency sensitive or responsive detection |
521 | ![[Patents]](../gifs/ps.gif) | . . By phase sensitive or responsive detection |
522 | ![[Patents]](../gifs/ps.gif) | . . By voltage or current measuring |
523 | ![[Patents]](../gifs/ps.gif) | . . . Of an applied test signal |
524 | ![[Patents]](../gifs/ps.gif) | . . . Polarity responsive |
525 | ![[Patents]](../gifs/ps.gif) | . . By resistance or impedance measuring |
526 | ![[Patents]](../gifs/ps.gif) | . . . Using a bridge circuit |
527 | ![[Patents]](../gifs/ps.gif) | . . By applying a test signal |
528 | ![[Patents]](../gifs/ps.gif) | . . . Tracing test signal to fault location |
529 | ![[Patents]](../gifs/ps.gif) | . . . . Using a magnetic field sensor |
530 | ![[Patents]](../gifs/ps.gif) | . . . . Using an electric field sensor |
531 | ![[Patents]](../gifs/ps.gif) | . . . At fault site |
532 | ![[Patents]](../gifs/ps.gif) | . . . Using time measuring |
533 | ![[Patents]](../gifs/ps.gif) | . . . . Of reflected test signal |
534 | ![[Patents]](../gifs/ps.gif) | . . By reflection technique |
535 | ![[Patents]](../gifs/ps.gif) | . . By time measuring |
536 | ![[Patents]](../gifs/ps.gif) | . . By spark or arc discharge |
537 | ![[Patents]](../gifs/ps.gif) | . Of individual circuit component or element |
750 | ![[Patents]](../gifs/ps.gif) | . . System sensing fields adjacent device under test (DUT) |
751 | ![[Patents]](../gifs/ps.gif) | . . . Using electron beam probe |
752 | ![[Patents]](../gifs/ps.gif) | . . . Using light probe |
753 | ![[Patents]](../gifs/ps.gif) | . . . Using electro-optic device |
754 | ![[Patents]](../gifs/ps.gif) | . . With probe elements |
755 | ![[Patents]](../gifs/ps.gif) | . . . Internal of or on support for device under test (DUT) |
756 | ![[Patents]](../gifs/ps.gif) | . . . Contact confirmation |
757 | ![[Patents]](../gifs/ps.gif) | . . . Probe contact enhancement |
758 | ![[Patents]](../gifs/ps.gif) | . . . Probe alignment or positioning |
759 | ![[Patents]](../gifs/ps.gif) | . . . With recording of test results on DUT |
760 | ![[Patents]](../gifs/ps.gif) | . . . With temperature control |
761 | ![[Patents]](../gifs/ps.gif) | . . . Pin |
762 | ![[Patents]](../gifs/ps.gif) | . . . Cantilever |
763 | ![[Patents]](../gifs/ps.gif) | . . DUT including test circuit |
764 | ![[Patents]](../gifs/ps.gif) | . . With identification of DUT |
765 | ![[Patents]](../gifs/ps.gif) | . . Test of semiconductor device |
766 | ![[Patents]](../gifs/ps.gif) | . . . With barrier layer |
767 | ![[Patents]](../gifs/ps.gif) | . . . . Diode |
768 | ![[Patents]](../gifs/ps.gif) | . . . . Bipolar transistor |
769 | ![[Patents]](../gifs/ps.gif) | . . . . Field effect transistor |
770 | ![[Patents]](../gifs/ps.gif) | . . Liquid crystal device test |
771 | ![[Patents]](../gifs/ps.gif) | . . Power supply test |
772 | ![[Patents]](../gifs/ps.gif) | . . Motor or generator fault tests |
538 | ![[Patents]](../gifs/ps.gif) | . . Electrical connectors |
539 | ![[Patents]](../gifs/ps.gif) | . . Multiconductor cable |
540 | ![[Patents]](../gifs/ps.gif) | . . . With sequencer |
541 | ![[Patents]](../gifs/ps.gif) | . . . For insulation fault |
542 | ![[Patents]](../gifs/ps.gif) | . . . Having a light or sound indicator |
543 | ![[Patents]](../gifs/ps.gif) | . . Single conductor cable |
544 | ![[Patents]](../gifs/ps.gif) | . . . For insulation fault |
545 | ![[Patents]](../gifs/ps.gif) | . . Armature or rotor |
546 | ![[Patents]](../gifs/ps.gif) | . . Winding or coil |
547 | ![[Patents]](../gifs/ps.gif) | . . . Transformer |
548 | ![[Patents]](../gifs/ps.gif) | . . Capacitor |
549 | ![[Patents]](../gifs/ps.gif) | . . Resistor |
550 | ![[Patents]](../gifs/ps.gif) | . . Fuse |
551 | ![[Patents]](../gifs/ps.gif) | . . Insulation |
552 | ![[Patents]](../gifs/ps.gif) | . . . Bushing |
553 | ![[Patents]](../gifs/ps.gif) | . . . Oil |
554 | ![[Patents]](../gifs/ps.gif) | . . . Sheet material |
555 | ![[Patents]](../gifs/ps.gif) | . Instruments and devices for fault testing |
556 | ![[Patents]](../gifs/ps.gif) | . . Having a lamp or light indicator |
557 | ![[Patents]](../gifs/ps.gif) | FOR INSULATION FAULT OF NONCIRCUIT ELEMENTS |
558 | ![[Patents]](../gifs/ps.gif) | . Where element moves while under test |
559 | ![[Patents]](../gifs/ps.gif) | . Where a moving sensing electrode scans a stationary element under test |
600 | ![[Patents]](../gifs/ps.gif) | IMPEDANCE, ADMITTANCE OR OTHER QUANTITIES REPRESENTATIVE OF ELECTRICAL STIMULUS/RESPONSE RELATIONSHIPS |
601 | ![[Patents]](../gifs/ps.gif) | . Calibration |
602 | ![[Patents]](../gifs/ps.gif) | . With auxiliary means to condition stimulus/response signals |
603 | ![[Patents]](../gifs/ps.gif) | . . For excitation |
604 | ![[Patents]](../gifs/ps.gif) | . . . Including marker signal generator circuit |
605 | ![[Patents]](../gifs/ps.gif) | . . For response signal evaluation or processing |
606 | ![[Patents]](../gifs/ps.gif) | . . . Including a signal comparison circuit |
607 | ![[Patents]](../gifs/ps.gif) | . . . Including a conversion (e.g., A->D or D-> A) process |
608 | ![[Patents]](../gifs/ps.gif) | . . . Including a ratiometric function |
609 | ![[Patents]](../gifs/ps.gif) | . . For sensing |
610 | ![[Patents]](../gifs/ps.gif) | . . . Including a bridge circuit |
611 | ![[Patents]](../gifs/ps.gif) | . . . Including a remote type circuit |
612 | ![[Patents]](../gifs/ps.gif) | . Parameter related to the reproduction or fidelity of a signal affected by a circuit under test |
613 | ![[Patents]](../gifs/ps.gif) | . . Noise |
614 | ![[Patents]](../gifs/ps.gif) | . . . Signal to noise ratio or noise figure |
615 | ![[Patents]](../gifs/ps.gif) | . . Transfer function type characteristics |
616 | ![[Patents]](../gifs/ps.gif) | . . . Gain or attenuation |
617 | ![[Patents]](../gifs/ps.gif) | . . . Response time or phase delay |
618 | ![[Patents]](../gifs/ps.gif) | . . . Transient response or transient recovery time (e.g., damping) |
619 | ![[Patents]](../gifs/ps.gif) | . . . Selective type characteristics |
620 | ![[Patents]](../gifs/ps.gif) | . . Distortion |
621 | ![[Patents]](../gifs/ps.gif) | . . . Envelope delay |
622 | ![[Patents]](../gifs/ps.gif) | . . . Phase |
623 | ![[Patents]](../gifs/ps.gif) | . . . Harmonic |
624 | ![[Patents]](../gifs/ps.gif) | . . . Intermodulation |
625 | ![[Patents]](../gifs/ps.gif) | . . . Dissymmetry or asymmetry |
626 | ![[Patents]](../gifs/ps.gif) | . . . Nonlinearity |
627 | ![[Patents]](../gifs/ps.gif) | . . Shielding effectiveness (SE) |
628 | ![[Patents]](../gifs/ps.gif) | . . . Circuit interference (e.g., crosstalk) measurement |
629 | ![[Patents]](../gifs/ps.gif) | . Distributive type parameters |
630 | ![[Patents]](../gifs/ps.gif) | . . Plural diverse parameters |
631 | ![[Patents]](../gifs/ps.gif) | . . Using wave polarization (e.g., field rotation) |
632 | ![[Patents]](../gifs/ps.gif) | . . Using particular field coupling type (e.g., fringing field) |
633 | ![[Patents]](../gifs/ps.gif) | . . Using resonant frequency |
634 | ![[Patents]](../gifs/ps.gif) | . . . To determine water content |
635 | ![[Patents]](../gifs/ps.gif) | . . . To determine dimension (e.g., distance or thickness) |
636 | ![[Patents]](../gifs/ps.gif) | . . . With a resonant cavity |
637 | ![[Patents]](../gifs/ps.gif) | . . Using transmitted or reflected microwaves |
638 | ![[Patents]](../gifs/ps.gif) | . . . Scattering type parameters (e.g., complex reflection coefficient) |
639 | ![[Patents]](../gifs/ps.gif) | . . . Where energy is transmitted through a test substance |
640 | ![[Patents]](../gifs/ps.gif) | . . . . To determine water content |
641 | ![[Patents]](../gifs/ps.gif) | . . . . To determine insertion loss |
642 | ![[Patents]](../gifs/ps.gif) | . . . Where energy is reflected (e.g., reflectometry) |
643 | ![[Patents]](../gifs/ps.gif) | . . . . To determine water content |
644 | ![[Patents]](../gifs/ps.gif) | . . . . To determine dimension (e.g., distance or thickness) |
645 | ![[Patents]](../gifs/ps.gif) | . . . . Having standing wave pattern |
646 | ![[Patents]](../gifs/ps.gif) | . . . . To determine reflection coefficient |
647 | ![[Patents]](../gifs/ps.gif) | . . Using a comparison or difference circuit |
648 | ![[Patents]](../gifs/ps.gif) | . . . With a bridge circuit |
649 | ![[Patents]](../gifs/ps.gif) | . Lumped type parameters |
650 | ![[Patents]](../gifs/ps.gif) | . . Using phasor or vector analysis |
651 | ![[Patents]](../gifs/ps.gif) | . . . With a bridge circuit |
652 | ![[Patents]](../gifs/ps.gif) | . . Of a resonant circuit |
653 | ![[Patents]](../gifs/ps.gif) | . . For figure of merit or Q value |
654 | ![[Patents]](../gifs/ps.gif) | . . Using inductive type measurement |
655 | ![[Patents]](../gifs/ps.gif) | . . . Including a tuned or resonant circuit |
656 | ![[Patents]](../gifs/ps.gif) | . . . Including a comparison or difference circuit |
657 | ![[Patents]](../gifs/ps.gif) | . . . . Using a bridge circuit |
658 | ![[Patents]](../gifs/ps.gif) | . . Using capacitive type measurement |
659 | ![[Patents]](../gifs/ps.gif) | . . . With loss characteristic evaluation |
660 | ![[Patents]](../gifs/ps.gif) | . . . With variable electrode area |
661 | ![[Patents]](../gifs/ps.gif) | . . . With variable distance between capacitor electrodes |
662 | ![[Patents]](../gifs/ps.gif) | . . . . To determine dimension (e.g., thickness or distance) |
663 | ![[Patents]](../gifs/ps.gif) | . . . Where a material or object forms part of the dielectric being measured |
664 | ![[Patents]](../gifs/ps.gif) | . . . . To determine water content |
665 | ![[Patents]](../gifs/ps.gif) | . . . . . By comparison or difference circuit |
666 | ![[Patents]](../gifs/ps.gif) | . . . . . . Including a bridge circuit |
667 | ![[Patents]](../gifs/ps.gif) | . . . . . By frequency signal response, change or processing circuit |
668 | ![[Patents]](../gifs/ps.gif) | . . . . . . Including a tuned or resonant circuit |
669 | ![[Patents]](../gifs/ps.gif) | . . . . . With compensation means |
670 | ![[Patents]](../gifs/ps.gif) | . . . . . . For temperature variations |
671 | ![[Patents]](../gifs/ps.gif) | . . . . To determine dimension (e.g., dielectric thickness) |
672 | ![[Patents]](../gifs/ps.gif) | . . . . By comparison or difference circuit |
673 | ![[Patents]](../gifs/ps.gif) | . . . . . Including a bridge circuit |
674 | ![[Patents]](../gifs/ps.gif) | . . . . By frequency signal response, change or processing circuit |
675 | ![[Patents]](../gifs/ps.gif) | . . . . . Including a tuned or resonant circuit |
676 | ![[Patents]](../gifs/ps.gif) | . . . With pulse signal processing circuit |
677 | ![[Patents]](../gifs/ps.gif) | . . . . Including R/C time constant circuit |
678 | ![[Patents]](../gifs/ps.gif) | . . . . Including charge or discharge cycle circuit |
679 | ![[Patents]](../gifs/ps.gif) | . . . With comparison or difference circuit |
680 | ![[Patents]](../gifs/ps.gif) | . . . . Including a bridge circuit |
681 | ![[Patents]](../gifs/ps.gif) | . . . With frequency signal response, change or processing circuit |
682 | ![[Patents]](../gifs/ps.gif) | . . . . Including a tuned or resonant circuit |
683 | ![[Patents]](../gifs/ps.gif) | . . . With phase signal processing circuit |
684 | ![[Patents]](../gifs/ps.gif) | . . . With compensation means |
685 | ![[Patents]](../gifs/ps.gif) | . . . . For temperature variation |
686 | ![[Patents]](../gifs/ps.gif) | . . . With a capacitive sensing means |
687 | ![[Patents]](../gifs/ps.gif) | . . . . Having fringing field coupling |
688 | ![[Patents]](../gifs/ps.gif) | . . . . Including a guard or ground electrode |
689 | ![[Patents]](../gifs/ps.gif) | . . . . To determine water content |
690 | ![[Patents]](../gifs/ps.gif) | . . . . Including a probe type structure |
691 | ![[Patents]](../gifs/ps.gif) | . . Using resistance or conductance measurement |
692 | ![[Patents]](../gifs/ps.gif) | . . . With living organism condition determination using conductivity effects |
693 | ![[Patents]](../gifs/ps.gif) | . . . With object or substance characteristic determination using conductivity effects |
694 | ![[Patents]](../gifs/ps.gif) | . . . . To determine water content |
695 | ![[Patents]](../gifs/ps.gif) | . . . . . Where the object moves while under test |
696 | ![[Patents]](../gifs/ps.gif) | . . . . . With a probe structure |
697 | ![[Patents]](../gifs/ps.gif) | . . . . For interface |
698 | ![[Patents]](../gifs/ps.gif) | . . . . To determine oil qualities |
699 | ![[Patents]](../gifs/ps.gif) | . . . . To determine dimension (e.g., distance or thickness) |
700 | ![[Patents]](../gifs/ps.gif) | . . . . . Including corrosion or erosion |
701 | ![[Patents]](../gifs/ps.gif) | . . . . Where the object moves while under test |
702 | ![[Patents]](../gifs/ps.gif) | . . . With radiant energy effects |
703 | ![[Patents]](../gifs/ps.gif) | . . . . Including heating |
704 | ![[Patents]](../gifs/ps.gif) | . . . With ratio determination |
705 | ![[Patents]](../gifs/ps.gif) | . . . With comparison or difference circuit |
706 | ![[Patents]](../gifs/ps.gif) | . . . . Including a bridge circuit |
707 | ![[Patents]](../gifs/ps.gif) | . . . With frequency response, change or processing circuit |
708 | ![[Patents]](../gifs/ps.gif) | . . . . Including a tuned or resonant circuit |
709 | ![[Patents]](../gifs/ps.gif) | . . . With phase signal processing circuit |
710 | ![[Patents]](../gifs/ps.gif) | . . . With pulse signal processing circuit |
711 | ![[Patents]](../gifs/ps.gif) | . . . . Including R/C time constant circuit |
712 | ![[Patents]](../gifs/ps.gif) | . . . . Including a digital or logic circuit |
713 | ![[Patents]](../gifs/ps.gif) | . . . With voltage or current signal evaluation |
714 | ![[Patents]](../gifs/ps.gif) | . . . . Including a potentiometer |
715 | ![[Patents]](../gifs/ps.gif) | . . . . Including a particular probing technique (e.g., four point probe) |
716 | ![[Patents]](../gifs/ps.gif) | . . . . . To determine dimension (e.g., distance or thickness) |
717 | ![[Patents]](../gifs/ps.gif) | . . . . . To determine material composition |
718 | ![[Patents]](../gifs/ps.gif) | . . . . . To detect a flaw or defect |
719 | ![[Patents]](../gifs/ps.gif) | . . . With semiconductor or IC materials quality determination using conductivity effects |
720 | ![[Patents]](../gifs/ps.gif) | . . . With compensation means |
721 | ![[Patents]](../gifs/ps.gif) | . . . . For temperature variation |
722 | ![[Patents]](../gifs/ps.gif) | . . . Device or apparatus determines conductivity effects |
723 | ![[Patents]](../gifs/ps.gif) | . . . . Potentiometer |
724 | ![[Patents]](../gifs/ps.gif) | . . . . Using a probe type structure |
725 | ![[Patents]](../gifs/ps.gif) | . Using a particular bridge circuit |
726 | ![[Patents]](../gifs/ps.gif) | . Transformer testing (e.g., ratio) |
727 | ![[Patents]](../gifs/ps.gif) | . Piezoelectric crystal testing (e.g., frequency, resistance) |
66 | ![[Patents]](../gifs/ps.gif) | CONDUCTOR IDENTIFICATION OR LOCATION (E.G., PHASE IDENTIFICATION) |
67 | ![[Patents]](../gifs/ps.gif) | . Inaccessible (at test point) conductor (e.g., buried in wall) |
160 | ![[Patents]](../gifs/ps.gif) | ELECTRICAL SPEED MEASURING |
161 | ![[Patents]](../gifs/ps.gif) | . Speed comparing means |
162 | ![[Patents]](../gifs/ps.gif) | . With acceleration measuring means |
163 | ![[Patents]](../gifs/ps.gif) | . Including speed analog electrical signal generator |
164 | ![[Patents]](../gifs/ps.gif) | . . Eddy current generator type (e.g., tachometer) |
165 | ![[Patents]](../gifs/ps.gif) | . . With direction indicator |
166 | ![[Patents]](../gifs/ps.gif) | . Including speed-related frequency generator |
167 | ![[Patents]](../gifs/ps.gif) | . . Including rotating magnetic field actuated indicator |
168 | ![[Patents]](../gifs/ps.gif) | . . Including periodic switch |
169 | ![[Patents]](../gifs/ps.gif) | . . . In ignition system |
170 | ![[Patents]](../gifs/ps.gif) | . . . . High voltage speed signal type |
171 | ![[Patents]](../gifs/ps.gif) | . . . With extent-of-travel indicator |
172 | ![[Patents]](../gifs/ps.gif) | . . Including synchronized recording medium |
173 | ![[Patents]](../gifs/ps.gif) | . . Including magnetic detector |
174 | ![[Patents]](../gifs/ps.gif) | . . . Permanent magnet type |
175 | ![[Patents]](../gifs/ps.gif) | . . Including radiant energy detector |
176 | ![[Patents]](../gifs/ps.gif) | . Including object displacement varied variable circuit impedance |
177 | ![[Patents]](../gifs/ps.gif) | . Including motor current or voltage sensor |
178 | ![[Patents]](../gifs/ps.gif) | . Including "event" sensing means |
179 | ![[Patents]](../gifs/ps.gif) | . . Magnetic field sensor |
180 | ![[Patents]](../gifs/ps.gif) | . . Mechanically actuated switch |
71.1 | ![[Patents]](../gifs/ps.gif) | DETERMINING NONELECTRIC PROPERTIES BY MEASURING ELECTRIC PROPERTIES |
71.2 | ![[Patents]](../gifs/ps.gif) | . Erosion |
71.3 | ![[Patents]](../gifs/ps.gif) | . Beam of atomic particles |
71.4 | ![[Patents]](../gifs/ps.gif) | . Particle counting |
71.5 | ![[Patents]](../gifs/ps.gif) | . Semiconductors for nonelectrical property |
71.6 | ![[Patents]](../gifs/ps.gif) | . Superconductors |
72 | ![[Patents]](../gifs/ps.gif) | TESTING POTENTIAL IN SPECIFIC ENVIRONMENT (E.G., LIGHTNING STROKE) |
72.5 | ![[Patents]](../gifs/ps.gif) | . Voltage probe |
73.1 | ![[Patents]](../gifs/ps.gif) | PLURAL, AUTOMATICALLY SEQUENTIAL TESTS |
74 | ![[Patents]](../gifs/ps.gif) | TESTING AND CALIBRATING ELECTRIC METERS (E.G., WATT-HOUR METERS) |
75 | ![[Patents]](../gifs/ps.gif) | . By stroboscopic means |
76.11 | ![[Patents]](../gifs/ps.gif) | MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE |
76.12 | ![[Patents]](../gifs/ps.gif) | . Analysis of complex waves |
76.13 | ![[Patents]](../gifs/ps.gif) | . . Amplitude distribution |
76.14 | ![[Patents]](../gifs/ps.gif) | . . . Radiometer (e.g., microwave, etc.) |
76.15 | ![[Patents]](../gifs/ps.gif) | . . . With sampler |
76.16 | ![[Patents]](../gifs/ps.gif) | . . . With counter |
76.17 | ![[Patents]](../gifs/ps.gif) | . . . With integrator |
76.18 | ![[Patents]](../gifs/ps.gif) | . . . With slope detector |
76.19 | ![[Patents]](../gifs/ps.gif) | . . Frequency spectrum analyzer |
76.21 | ![[Patents]](../gifs/ps.gif) | . . . By Fourier analysis |
76.22 | ![[Patents]](../gifs/ps.gif) | . . . Real-time spectrum analyzer |
76.23 | ![[Patents]](../gifs/ps.gif) | . . . With mixer |
76.24 | ![[Patents]](../gifs/ps.gif) | . . . With sampler |
76.25 | ![[Patents]](../gifs/ps.gif) | . . . With slope detector |
76.26 | ![[Patents]](../gifs/ps.gif) | . . . Scanning-panoramic receiver |
76.27 | ![[Patents]](../gifs/ps.gif) | . . . . With particular sweep circuit |
77.11 | ![[Patents]](../gifs/ps.gif) | . . . Nonscanning |
76.28 | ![[Patents]](../gifs/ps.gif) | . . . . Digital filter |
76.29 | ![[Patents]](../gifs/ps.gif) | . . . . With filtering |
76.31 | ![[Patents]](../gifs/ps.gif) | . . . . . Parallel filters |
76.32 | ![[Patents]](../gifs/ps.gif) | . . . . . . With space discharge device |
76.33 | ![[Patents]](../gifs/ps.gif) | . . . . Correlation |
76.34 | ![[Patents]](../gifs/ps.gif) | . . . . . With space discharge device |
76.35 | ![[Patents]](../gifs/ps.gif) | . . . . With delay line |
76.36 | ![[Patents]](../gifs/ps.gif) | . . . . With optics |
76.37 | ![[Patents]](../gifs/ps.gif) | . . . . . Bragg cell |
76.38 | ![[Patents]](../gifs/ps.gif) | . . With sampler |
76.39 | ![[Patents]](../gifs/ps.gif) | . Frequency of cyclic current or voltage (e.g., cyclic counting etc.) |
76.41 | ![[Patents]](../gifs/ps.gif) | . . Frequency comparison, (e.g., heterodyne, etc.) |
76.42 | ![[Patents]](../gifs/ps.gif) | . . . With sampler |
76.43 | ![[Patents]](../gifs/ps.gif) | . . . With plural mixers |
76.44 | ![[Patents]](../gifs/ps.gif) | . . . With filtering |
76.45 | ![[Patents]](../gifs/ps.gif) | . . . . Bandpass |
76.46 | ![[Patents]](../gifs/ps.gif) | . . . . Plural |
76.47 | ![[Patents]](../gifs/ps.gif) | . . . Digital output |
76.48 | ![[Patents]](../gifs/ps.gif) | . . . . With counter |
76.49 | ![[Patents]](../gifs/ps.gif) | . . Tuned mechanical resonator (e.g., reed, piezocrystal, etc.) |
76.51 | ![[Patents]](../gifs/ps.gif) | . . By tuning (e.g., to resonance,etc.) |
76.52 | ![[Patents]](../gifs/ps.gif) | . . By phase comparison |
76.53 | ![[Patents]](../gifs/ps.gif) | . . . With phase lock |
76.54 | ![[Patents]](../gifs/ps.gif) | . . . With delay line |
76.55 | ![[Patents]](../gifs/ps.gif) | . . . Digital output |
76.56 | ![[Patents]](../gifs/ps.gif) | . . . . With microwave frequency detection |
76.57 | ![[Patents]](../gifs/ps.gif) | . . . . With tone detection |
76.58 | ![[Patents]](../gifs/ps.gif) | . . . . With sampler |
76.59 | ![[Patents]](../gifs/ps.gif) | . . . . With multiplexing |
76.61 | ![[Patents]](../gifs/ps.gif) | . . . . With memory |
76.62 | ![[Patents]](../gifs/ps.gif) | . . . . With counter |
76.63 | ![[Patents]](../gifs/ps.gif) | . . . . . Using register |
76.64 | ![[Patents]](../gifs/ps.gif) | . . . . . Plural |
76.65 | ![[Patents]](../gifs/ps.gif) | . . . . With space discharge device |
76.66 | ![[Patents]](../gifs/ps.gif) | . . . With capacitive energy storage |
76.67 | ![[Patents]](../gifs/ps.gif) | . . . . With space discharge device |
76.68 | ![[Patents]](../gifs/ps.gif) | . . . With filtering |
76.69 | ![[Patents]](../gifs/ps.gif) | . . . Current output proportional to frequency |
76.71 | ![[Patents]](../gifs/ps.gif) | . . . Nulling circuit |
76.72 | ![[Patents]](../gifs/ps.gif) | . . . Qualitative output |
76.73 | ![[Patents]](../gifs/ps.gif) | . . . With saturable device |
76.74 | ![[Patents]](../gifs/ps.gif) | . . . Deviation measurement |
76.75 | ![[Patents]](../gifs/ps.gif) | . . Having inductive sensing |
76.76 | ![[Patents]](../gifs/ps.gif) | . . With space discharge device |
76.77 | ![[Patents]](../gifs/ps.gif) | . Phase comparison (e.g., between cyclic pulse voltage and sinusoidal current, etc.) |
76.78 | ![[Patents]](../gifs/ps.gif) | . . Quadrature sensing |
76.79 | ![[Patents]](../gifs/ps.gif) | . . Feedback control, electrical |
76.81 | ![[Patents]](../gifs/ps.gif) | . . Feedback control, mechanical |
76.82 | ![[Patents]](../gifs/ps.gif) | . . Digital output |
76.83 | ![[Patents]](../gifs/ps.gif) | . . Analog output |
84 | ![[Patents]](../gifs/ps.gif) | . . With waveguide (e.g., coaxial cable) |
85 | ![[Patents]](../gifs/ps.gif) | . . With frequency conversion |
86 | ![[Patents]](../gifs/ps.gif) | . . Polyphase (e.g., phase angle, phase rotation or sequence) |
87 | ![[Patents]](../gifs/ps.gif) | . . With nonlinear device (e.g., saturable reactor, rectifier), discharge device (e.g., gas tube) or lamp |
88 | ![[Patents]](../gifs/ps.gif) | . . . Cathode ray |
89 | ![[Patents]](../gifs/ps.gif) | . . . Space discharge control means (e.g., grid) |
90 | ![[Patents]](../gifs/ps.gif) | . . Electrodynamometer instrument |
91 | ![[Patents]](../gifs/ps.gif) | . . Synchroscope type |
92 | ![[Patents]](../gifs/ps.gif) | . Fluid (e.g., thermal expansion) |
93 | ![[Patents]](../gifs/ps.gif) | . . Conductive field (e.g., mercury) |
94 | ![[Patents]](../gifs/ps.gif) | . . . Electrolytic |
95 | ![[Patents]](../gifs/ps.gif) | . With waveguide or long line |
96 | ![[Patents]](../gifs/ps.gif) | . Using radiant energy |
97 | ![[Patents]](../gifs/ps.gif) | . . Light beam type (e.g., mirror galvanometer, parallax-free scale) |
98 | ![[Patents]](../gifs/ps.gif) | . Balancing (e.g., known/unknown voltage comparison, bridge, rebalancing) |
99R | ![[Patents]](../gifs/ps.gif) | . . Automatic |
100 | ![[Patents]](../gifs/ps.gif) | . . . With recording |
99D | ![[Patents]](../gifs/ps.gif) | . . . Digital voltmeters |
101 | ![[Patents]](../gifs/ps.gif) | . Non-rebalancing bridge |
102 | ![[Patents]](../gifs/ps.gif) | . Transient or portion of cyclic |
103R | ![[Patents]](../gifs/ps.gif) | . Demand, excess, maximum or minimum (e.g., separate meters for positive and negative power, peak voltmeter) |
104 | ![[Patents]](../gifs/ps.gif) | . . Thermal (e.g., actuation) |
103P | ![[Patents]](../gifs/ps.gif) | . . Peak voltmeters |
105 | ![[Patents]](../gifs/ps.gif) | . Thermal (e.g., compensation) |
106 | ![[Patents]](../gifs/ps.gif) | . . Actuation |
107 | ![[Patents]](../gifs/ps.gif) | . Polyphase |
108 | ![[Patents]](../gifs/ps.gif) | . . Positive, negative or zero sequence |
109 | ![[Patents]](../gifs/ps.gif) | . Electrostatic attraction or piezoelectric |
110 | ![[Patents]](../gifs/ps.gif) | . Meter protection or fraud combatting |
111 | ![[Patents]](../gifs/ps.gif) | . With storage means for voltage or current (e.g., condenser banks) |
112 | ![[Patents]](../gifs/ps.gif) | . . Tape, sheet (e.g., disk) or wire (e.g., magnetic) storage |
113 | ![[Patents]](../gifs/ps.gif) | . Recording |
114 | ![[Patents]](../gifs/ps.gif) | . Plural meters (e.g., plural movements in one case) |
115 | ![[Patents]](../gifs/ps.gif) | . Plural ranges, scales or registration rates |
116 | ![[Patents]](../gifs/ps.gif) | . . With register (e.g., discount type, demand penalty) |
117R | ![[Patents]](../gifs/ps.gif) | . Magnetic saturation (e.g., in field or in amplifier) |
117H | ![[Patents]](../gifs/ps.gif) | . . Hall effect |
118 | ![[Patents]](../gifs/ps.gif) | . Modulator/demodulator |
119 | ![[Patents]](../gifs/ps.gif) | . With rectifier (e.g., A.C. to D.C.) |
120 | ![[Patents]](../gifs/ps.gif) | . With voltage or current conversion (e.g., D.C. to A.C., 60 to 1000) |
121R | ![[Patents]](../gifs/ps.gif) | . Cathode ray (e.g., magic eye) |
121E | ![[Patents]](../gifs/ps.gif) | . . Magic eye indicators |
122 | ![[Patents]](../gifs/ps.gif) | . Gaseous discharge (e.g., spark gap voltmeter) |
123R | ![[Patents]](../gifs/ps.gif) | . With amplifier or space discharge device |
124 | ![[Patents]](../gifs/ps.gif) | . . Inverted amplifier |
123C | ![[Patents]](../gifs/ps.gif) | . . Feedback amplifiers |
125 | ![[Patents]](../gifs/ps.gif) | . Inertia control, instrument damping and vibration damping |
126 | ![[Patents]](../gifs/ps.gif) | . With coupling means (e.g., attenuator, shunt) |
127 | ![[Patents]](../gifs/ps.gif) | . . Transformer (e.g., split core admits conductor carrying unknown current) |
128 | ![[Patents]](../gifs/ps.gif) | . . Selective filter |
129 | ![[Patents]](../gifs/ps.gif) | . Polepiece (e.g., split) admits nonunitary input conductor |
130 | ![[Patents]](../gifs/ps.gif) | . Self-calibration |
131 | ![[Patents]](../gifs/ps.gif) | . Suppressed zero |
132 | ![[Patents]](../gifs/ps.gif) | . Nonlinear (e.g., Thyrite) |
133 | ![[Patents]](../gifs/ps.gif) | . Nonquantitative (e.g., hot-line indicator, polarity tester) |
134 | ![[Patents]](../gifs/ps.gif) | . With commutator or reversing or pulsating switch (e.g., D.C. watt-hour meter) |
135 | ![[Patents]](../gifs/ps.gif) | . . Oscillating |
136 | ![[Patents]](../gifs/ps.gif) | . With rolling wheel or ball (e.g., transmission, integrating) |
137 | ![[Patents]](../gifs/ps.gif) | . Eddy current rotor (e.g., A.C. integrating wattmeter) |
138 | ![[Patents]](../gifs/ps.gif) | . . With phase adjustment |
139 | ![[Patents]](../gifs/ps.gif) | . Motor-driven, time-controlled or oscillating (e.g., ratchet) |
140R | ![[Patents]](../gifs/ps.gif) | . Plural inputs (e.g., summation, ratio) |
141 | ![[Patents]](../gifs/ps.gif) | . . Voltamperes (real or reactive) |
142 | ![[Patents]](../gifs/ps.gif) | . . Watts |
140D | ![[Patents]](../gifs/ps.gif) | . . Ratio |
143 | ![[Patents]](../gifs/ps.gif) | . Plural active motor elements (e.g., for two crossed pointers) |
144 | ![[Patents]](../gifs/ps.gif) | . With electromagnetic field (e.g., dynamometer) |
145 | ![[Patents]](../gifs/ps.gif) | . . Solenoid plunger type |
146 | ![[Patents]](../gifs/ps.gif) | . . With permanent magnet (e.g., field, vane) |
147 | ![[Patents]](../gifs/ps.gif) | . . Soft iron vane |
149 | ![[Patents]](../gifs/ps.gif) | . With probe, prod or terminals |
150 | ![[Patents]](../gifs/ps.gif) | . Eccentrically pivoted coil |
151R | ![[Patents]](../gifs/ps.gif) | . With permanent magnet |
152 | ![[Patents]](../gifs/ps.gif) | . . Drag magnet |
151A | ![[Patents]](../gifs/ps.gif) | . . Permanent magnet core |
153 | ![[Patents]](../gifs/ps.gif) | . With register |
154R | ![[Patents]](../gifs/ps.gif) | . With rotor (e.g., filar suspension, zero set, balancing) |
155 | ![[Patents]](../gifs/ps.gif) | . . With pivot (e.g., internal friction compensation, anticreep) |
154PB | ![[Patents]](../gifs/ps.gif) | . . Pointer and bearing details |
156 | ![[Patents]](../gifs/ps.gif) | . Casings |
157 | ![[Patents]](../gifs/ps.gif) | . Combined |
158.1 | ![[Patents]](../gifs/ps.gif) | MISCELLANEOUS |
| | ****************************** |
| | CROSS-REFERENCE ART COLLECTION |
| | ****************************** |
800 | ![[Patents]](../gifs/ps.gif) | DIVINING RODS |