US PATENT SUBCLASS 455 / 31.1
SYSTEM WITH RECEIVER SELECTION

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

31.1SYSTEM WITH RECEIVER SELECTION {4}
31.2  DF  .~> Control of selectively responsive paging arrangement over telephone line {1}
32.1  DF  .~> Receiver scans for address signal
35.1  DF  .~> Tone coded squelch {1}
38.1  DF  .~> Coded sequence {1}

DEFINITION

Classification: 455/31.1

SYSTEM WITH RECEIVER SELECTION:

(under the class definition) Subject matter wherein an operator at a transmitter may selectively communicate with a

selected one of a plurality of receivers or wherein an operator at the transmitter and/or any one of the receivers may signal any one or all of the remainder of the transmitters and/or receivers that a given condition of the system exists.

(1) Note. As an example, the operator at a first transmitter may signal any or all receivers to which he wishes to transmit a message on the frequency to which receiver or receivers is/are tuned.

SEE OR SEARCH CLASS

340, Communications: Electrical,

825+, for selective signalling systems in general and subclass 539 for electrical signalling systems which are automatically responsive to a condition and which utilize a radio link.

379, Telephonic Communications, appropriate subclasses for telephone systems with dialing, ringing, or other alerting means.