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Communications
Class Information
Number:
375/38
Name:
Pulse or digital communications
>
Description:
Sub-classes under this class:
Class Number
Class Name
Patents
375/130
Spread spectrum
1,316
375/211
Repeaters
244
375/216
Apparatus convertible to analog
212
375/218
Earth or water medium
15
375/219
Transceivers
1,093
375/224
Testing
714
375/229
Equalizers
709
375/237
Pulse number modulation
30
375/238
Pulse width modulation
422
375/239
Pulse position, frequency, or spacing modulation
272
375/240
Bandwidth reduction or expansion
837
375/242
Pulse code modulation
420
375/256
Pulse transmission via radiated baseband
71
375/257
Cable systems and components
802
375/259
Systems using alternating or pulsating current
665
375/286
Multilevel
276
375/295
Transmitters
998
375/316
Receivers
1,328
375/353
Pulse amplitude modulation
108
375/354
Synchronizers
1,332
375/377
Miscellaneous
544
Patents under this class:
Patent Number
Title Of Patent
Date Issued
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