US PATENT SUBCLASS 455 / 510
.~.~.~.~ Plural requests (e.g., retries)

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
500  DF  .~ Plural transmitters or receivers (i.e., more than two stations) {4}
507  DF  .~.~ Central station (e.g., master, etc.) {6}
509  DF  .~.~.~ Channel allocation {5}
510.~.~.~.~ Plural requests (e.g., retries)

DEFINITION

Classification: 455/510

Plural requests (e.g., retries):

(under subclass 509) Subject matter wherein a station makes repeated attempts for obtaining a communication channel.