US PATENT SUBCLASS 379 / FOR 117
.~.~ Access restricting (379/95)

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

FOR 112  DF  TELEPHONE LINE OR SYSTEM COMBINED WITH DIVERSE ELECTRICAL SYSTEM OR SIGNALLING (E.G., COMPOSITE) (379/90) {8}
FOR 115  DF  .~ With transmission of a digital message signal over a telephone line (379/93) {4}
FOR 117.~.~ Access restricting (379/95)

DEFINITION

Classification: 379/FOR.117

Access restricting:

Foreign art collection for restricting telephone access to digital computing or communication equipment.