US PATENT SUBCLASS 379 / 352
.~ Substation originated

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

Internet Version by PATENTEC © 1999      Terms of Use


379 /   HD   TELEPHONIC COMMUNICATIONS

350  DF  SUPERVISORY OR CONTROL LINE SIGNALLING {5}
352.~ Substation originated {8}
353  DF  .~.~> Conversion of signal form
354  DF  .~.~> With called number display
355  DF  .~.~> Repertory or abbreviated call signal generation {4}
360  DF  .~.~> Voice frequency band signalling (e.g., reed devices) {1}
362  DF  .~.~> Pulse signal generator (e.g., rotary dial) {5}
368  DF  .~.~> Plural-switch number input device (e.g., keypad)
369  DF  .~.~> Detail of mounting of switch pad or dial {1}
371  DF  .~.~> Magneto signalling

DEFINITION

Classification: 379/352

Substation originated:

(under subclass 350) Subject matter which transmits a called station address signal over a telephone line from a subscriber terminal.

(1) Note. This subclass also includes a transmitted line signal.

(2) Note. Supervisory signals (e.g., off-hook) are excluded from this and indented subclasses are classified in subclasses 377+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

31, for diagnostic testing of a line signal generator.

90+, for selective signalling over a telephone line for control of a diverse are device.

SEE OR SEARCH CLASS

340, Communications: Electrical, 825+, for selective signalling not limited to a telephone system; subclasses 345+ for a code transmitting device.

362, Illumination,

24, for an illuminated telephone dial.