US PATENT SUBCLASS 341 / 178
.~ With variable pulse spacing or grouping

Current as of: June, 1999
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341 /   HD   CODED DATA GENERATION OR CONVERSION

173  DF  CODE GENERATOR OR TRANSMITTER {8}
178.~ With variable pulse spacing or grouping {5}
179  DF  .~.~> Plural pulse shapes
180  DF  .~.~> Plural channels
181  DF  .~.~> Carrier frequency variation
182  DF  .~.~> With variable pulse length
183  DF  .~.~> Pulse presence or absence in equal length code

DEFINITION

Classification: 341/178

With variable pulse spacing and grouping:

(under subclass 173) Subject matter in which the duration of or between pulses, or the order of diverse types of pulses, is varied.

(1) Note. Pulse permutation devices are classified in this and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:

29, for this subject matter controlled by a keyboard or keypad.

SEE OR SEARCH CLASS

375, Pulse or Digital Communications,

237+, for a pulse code modulating message transmitter.