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Browse by Category: Main > Communications |
| Class Number |
Class Name |
Patents |
| 181 |
Acoustics |
18,196 |
| 367 |
Communications, electrical: acoustic wave systems and devices |
18,909 |
| 342 |
Communications: directive radio wave systems and devices (e.g., radar, radio navigation) |
43,314 |
| 340 |
Communications: electrical |
139,710 |
| 343 |
Communications: radio wave antennas |
34,199 |
| 329 |
Demodulators |
3,836 |
| 358 |
Facsimile and static presentation processing |
66,249 |
| D10 |
Measuring, testing, or signalling instruments |
22,732 |
| 370 |
Multiplex communications |
140,072 |
| 398 |
Optical communications |
32,298 |
| 331 |
Oscillators |
28,436 |
| 375 |
Pulse or digital communications |
83,714 |
| 346 |
Recorders |
6,071 |
| D14 |
Recording, communication, or information retrieval equipment |
44,606 |
| 116 |
Signals and indicators |
10,229 |
| 455 |
Telecommunications |
147,002 |
| 178 |
Telegraphy |
4,146 |
| 379 |
Telephonic communications |
82,154 |
| 386 |
Television signal processing for dynamic recording or reproducing |
21,086 |
| 334 |
Tuners |
774 | |
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