US PATENT SUBCLASS 455 / 23
.~ Frequency or phase modulation

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


455 /   HD   TELECOMMUNICATIONS

7  DF  CARRIER WAVE REPEATER OR RELAY SYSTEM (I.E., RETRANSMISSION OF SAME INFORMATION) {12}
23.~ Frequency or phase modulation

DEFINITION

Classification: 455/23

Frequency or phase modulation:

(under subclass 7) Subject matter where the carrier wave is modulated by varying its frequency or phase in accordance with the information signal.

SEE OR SEARCH CLASS

329, Demodulators,

315+, for frequency demodulators and subclasses 345+ for phase demodulators.

332, Modulators,

183+, for modulation converters (e.g., FM. to A.M.); and subclasses 144+ and 117+ for phase or frequency modulators, per se.