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| Class 307 | ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS |
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![[List of Pre Grant Publications for class 307 subclass 1]](../as.gif) | ![[List of Patents for class 307 subclass 1]](../ps.gif) | 1 | SUPERIMPOSED UNLIKE CURRENTS |
| | 9.1 | VEHICLE MOUNTED SYSTEMS |
| | 11 | PLURAL LOAD CIRCUIT SYSTEMS |
| | 12 |  Common conductor or return type |
| | 17 | Transformer connections |
| | 18 | Plural sources of supply |
| | 19 |  Interconnected for energy transfer |
| | 23 | Substitute or alternate source |
| | 24 | With control of magnitude of current or power |
| | 25 | Diverse sources |
| | 29 | Selectively connected loads and/or sources |
| | 30 | Anticoupling of load circuits through same source |
| | 31 | Control of current or power |
| | 36 | Serially connected load circuits |
| | 38 | Selectively connected or controlled load circuits |
| | 42 | Circuit arrangements or layouts |
| | 43 | PLURAL SUPPLY CIRCUITS OR SOURCES |
| | 44 | One source floats across or compensates for other source |
| | 45 | With intervening converter |
| | 47 | Dynamoelectric-type source |
| | 48 | Storage battery or accumulator-type source |
| | 51 | Circulating- or inter-current control or prevention |
| | 52 | Load current control |
| | 53 | Load current division |
| | 60 | Constant load or current |
| | 62 | Load-limiting |
| | 63 | Serially connected sources |
| | 64 | Substitute or emergency source |
| | 69 | Sources distributed along load circuit |
| | 70 | Load transfer without paralleling sources |
| | 71 | Series-parallel connection of sources |
| | 72 | Diverse or unlike electrical characteristics |
| | 77 | Series-connected sources |
| | 80 | Selective or optional sources |
| | 82 | Plural converters |
| | 83 | Plural transformers |
| | 84 | Plural generators |
| | 85 | Connecting or disconnecting |
| | 400 | ELECTRETS |
| | 401 | NONLINEAR REACTOR SYSTEMS (E.G., SATURABLE) |
| | 402 | Parametrons |
| | 406 | Magnetic flip-flops |
| | 407 | Logic circuits |
| | 408 | Multiaperture |
| | 409 | Clocking, delay or transmission line |
| | 410 | Nor, Not logic circuit |
| | 411 | Exclusive Or, And logic circuit |
| | 412 | Driver circuits |
| | 413 | Signal sensor (e.g., current or frequency) |
| | 414 | Magnetic trigger devices |
| | 415 | Magnetic switching circuits |
| | 416 | Amplifiers using nonlinear reactors (i.e., magnetic amplifiers) |
| | 419 | Magnetic pulse generator |
| | 422 | Multiaperture |
| | 424 | Parametric frequency converter |
| | 326 | PERSONNEL SAFETY OR LIMIT CONTROL FEATURES |
| | 89 | ANTI-INDUCTION OR COUPLING TO OTHER SYSTEMS |
| | 95 | ANTI-ELECTROLYSIS |
| | 96 | INTERMITTENT REGULATORY INTERRUPTION OF SYSTEM |
| | 98 | COMBINED IMPEDANCE AND SWITCH SYSTEMS |
| | 100 | SHUNTING OR SHORT CIRCUITING SYSTEMS |
| | 101 | RESIDUAL OR REMANENT MAGNETISM CONTROL |
| | 102 | STABILIZED, ANTI-HUNTING OR ANTIOSCILLATION SYSTEMS |
| | 103 | WITH LINE DROP COMPENSATION |
| | 104 | ELECTROMAGNET OR HIGHLY INDUCTIVE SYSTEMS |
| | 105 | WITH HARMONIC FILTER OR NEUTRALIZER |
| | 106 | WAVE FORM OR WAVE SHAPE DETERMINATIVE OR PULSE-PRODUCING SYSTEMS |
| | 109 | CAPACITOR |
| | 111 | NONRESPONSIVE-TO-FREQUENCY-CHANGE SYSTEMS |
| | 650 | WITH NONSWITCHING MEANS RESPONSIVE TO EXTERNAL NONELECTRICAL CONDITION |
| | 651 | Temperature responsive |
| | 652 | Responsive to approach or passage of an object |
| | 653 | Flame responsive (e.g., flame acts as a rectifier in circuit) |
| | 112 | SWITCHING SYSTEMS |
| | 113 | Plural switches |
| | 116 | Condition responsive |
| | 117 | Light, heat, vibratory or radiant energy |
| | 118 | Fluid pressure, density, level, velocity or humidity |
| | 119 | Mechanical force |
| | 125 | Electrical |
| | 132R | Repetitive make and break |
| | 134 | With operation facilitating feature |
| | 139 | Switch actuation |
| | 145 | WITH CURRENT COLLECTION OR TRANSFER |
| | 146 | UNIDIRECTIONAL CONDUCTOR SYSTEMS |
| | 147 | CONDUCTOR ARRANGEMENTS OR STRUCTURE |
| | 149 | MISCELLANEOUS SYSTEMS |
| | 150 | Power packs |
| | 151 | Conversion systems |
| | 152 | Rate of change responsive systems |
| | 153 | Generator control systems |
| | 154 | For particular load device |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| DIGESTS | ||
| | DIG1 | DATA TRANSMITTED OVER POWER LINES |
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