US PATENT SUBCLASS 379 / 200
.~.~ Restrictive dialing circuit

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

188  DF  CALL OR TERMINAL ACCESS ALARM OR CONTROL {5}
199  DF  .~ At substation {1}
200.~.~ Restrictive dialing circuit

DEFINITION

Classification: 379/200

Restrictive dialing circuit:

(under subclass 199) Subject matter wherein the call restriction limits the call address signals which may be generated.