US PATENT SUBCLASS 370 / 909
.~ Token ring

Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

908  DF  LOCAL AREA NETWORK {3}
909.~ Token ring

DEFINITION

Classification: 370/909

Token ring:

(under subclass 908) Subject matter in which an idle or busy signal, indicative of the status of the communications channel or path, is passed from station to station on a closed transmission path.