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| Class 392 | ELECTRIC RESISTANCE HEATING DEVICES |
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| This Class 392 is considered to be an integral part of Class 219 (see the Class 219 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 219. | ||
| HEATING DEVICES (CLASS 219 SUBCLASS 200) |
![[List of Pre Grant Publications for class 392 subclass 301]](../as.gif) | ![[List of Patents for class 392 subclass 301]](../ps.gif) | 301 |  Borehole type |
| | 302 |  With heat exchange fluid |
| | 303 | With vapor generator |
| | 304 | Heating element surrounding delivery pipe |
| | 305 | Suspended by cable in well |
| | 306 | Plural separate heating devices |
| | 307 | Combined with nonelectric heating means (e.g., gas, etc.) |
| | 311 | Fluid-in-circuit type heater |
| | 312 | Method |
| | 313 | Portable |
| | 314 | Continuous flow of fluid being heated |
| | 315 |  With means to adjust current path between electrodes |
| | 318 | Current control means |
| | 319 | With discharge member for line or tank |
| | 320 | Tube or pipe forms flow path |
| | 322 | With reservoir or tank |
| | 324 | Steam or vapor generator |
| | 325 | Line connected boiler |
| | 326 |  Control of electrode immersion level |
| | 329 | With means to adjust current path between elctrodes |
| | 331 | Electrode arrangement |
| | 333 | Manually filled tank or container |
| | 338 | Electrode details |
| | 339 | With heat storage means |
| | 340 | Method |
| | 341 | For fluid heating (e.g., gas or liquid, etc.) |
| | 342 | For vaporization |
| | 343 | For subsequent heating by radiation |
| | 344 | For subsequent heating by convection |
| | 345 | Means to control heating accumulating medium |
| | 346 | Heat accumulating medium details |
| | 347 | Convection space heater |
| | 348 | Artificial fire |
| | 349 | Central heating type |
| | 351 | Floor furnace type |
| | 352 | Baseboard type |
| | 354 | With intermediate heat absorber |
| | 360 | Forced air type |
| | 361 | Heating attachment for fan |
| | 362 | Fan with heated blades |
| | 363 | Wall mounted |
| | 364 | Ceiling mounted |
| | 365 | Portable |
| | 370 | Wall mounted |
| | 372 | Mounted in or on window or door |
| | 373 | Portable |
| | 375 | Combined with radiation |
| | 379 | Concentrated heated air stream (i.e., blast) |
| | 386 | Vaporizer |
| | 387 | Method |
| | 388 | For metal vapor deposition |
| | 390 | With disposable evaporant cartridge or container |
| | 391 | By radiant heat source |
| | 392 | Wall mounted |
| | 393 | By light bulb heat source |
| | 394 | Liquid evaporant (e.g., water, etc.) |
| | 407 | Radiant heater |
| | 408 | With filter or diffuser for radiant energy |
| | 409 | Hand-held |
| | 411 | Lamp banks (i.e., array of plural lamps) |
| | 412 | Adjustable lamps position |
| | 414 | Lamp banks form arch |
| | 415 | Lamp banks movable relative to stationary work during use |
| | 416 | With chamber |
| | 417 | For heating moving strand, web or sheet |
| | 418 | With support for workpiece |
| | 419 | Focussed radiant beam |
| | 422 | With reflector |
| | 423 | Elongated reflector |
| | 426 | Bowl-shaped reflector |
| | 427 | Annular heating element concentric with reflector axis |
| | 428 | Linear heating element aligned with reflector axis |
| | 430 | Wall mounted |
| | 431 | Collapsible or foldable reflector |
| | 432 | Radiant extended surface type heater |
| | 440 | Multi-direction radiant heat output |
| | 441 | Tank or container type liquid heater |
| | 442 | Pour-in displacement discharge type tank |
| | 443 | Flexible container (e.g., water bottle, etc.) |
| | 444 | Portable container or tank |
| | 449 | Line connected tank |
| | 450 | Plural serially connected compartments |
| | 451 | With immersion heating element |
| | 452 | With baffle or guard |
| | 453 | Removably insertable into tubular receptacle in tank |
| | 454 | Plural heating zones |
| | 455 | With heating element mounting arrangements |
| | 456 | With heat exchange fluid |
| | 457 | With protecting means against galvanic corrosion |
| | 458 | With external heater |
| | 459 | Clamped or secured to tank wall |
| | 460 | Producing radiation |
| | 461 | With externally mounted circulation-type heater |
| | 463 | With timer controlled energization |
| | 465 | Continuous flow type fluid heater |
| | 466 | Method |
| | 467 | With hot plate |
| | 468 | Pipeline tracing |
| | 470 | Disposable cartridge, tube or bag forms heated flow path (e.g., blood bag, etc.) |
| | 471 | Combined liquid flow heater and pump unit |
| | 472 | Flexibe (e.g., hose, etc.) |
| | 473 | Fluid heater carried on discharge member |
| | 478 | Fluid conveying tube or pipe comprising resistive heating element |
| | 479 | Externally heated line connected section |
| | 480 | Pipe or tube forms flow path |
| | 482 | Plural pipes or tubes form flow path |
| | 483 | Heating element producing radiation |
| | 484 | Block forms flow path |
| | 485 | Heated line section with heating element internal of flow path |
| | 486 | Plural pipes or tubes form flow path |
| | 487 | With jacket for heating element |
| | 488 | Pipe or tube forms flow path |
| | 490 | Plural heated line sections (e.g., series or parallel, etc.) |
| | 491 | With baffle-defined flow path |
| | 494 | Block forms flow path |
| | 495 | Plural different fluids simultaneously heated |
| | 496 | With heat exchange fluid |
| | 497 | Immersion heater details |
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