US PATENT SUBCLASS 455 / 73
TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER)

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

73TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) {9}
74  DF  .~> Convertible (e.g., to diverse art device) {1}
75  DF  .~> With frequency stabilization (e.g., automatic frequency control) {1}
77  DF  .~> With tuning
78  DF  .~> With transmitter-receiver switching or interaction prevention {2}
84  DF  .~> With a common signal processing stage {2}
88  DF  .~> Transceiver controlling a separate transceiver or receiver
550  DF  .~> Radiotelephone equipment detail {17}
575  DF  .~> Portable or mobile
90  DF  .~> Housing or support

DEFINITION

Classification: 455/73

TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER):

(under the class definition) Subject matter having both a signal transmitter and a signal receiver at a common geos:graphic location for transmission and reception of separate signals.

(1) Note. The transmitter and receiver at a common location are hereafter termed "a station" in these definitions.

(2) Note. The simultaneous separation of a transmitter and receiver is a duplex operation and is classified in Class 370, Multiplex Communications, subclasses 276+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

1, for an interference signal transmitter, which may include a receiver at the same station.

606+, for a complete light wave communication station.

SEE OR SEARCH CLASS 370, Multiplex Communications,

276+, for duplex systems, see (2) Note above.

375, Pulse or Digital Communications,

219, for similar devices which handle pulse and digital signals.