TII Computer Systems, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4729126 Method and apparatus for supervising the accessing and testing of communication systemsExpiredNov 04, 86Mar 01, 88[H04B]
4723271 Apparatus for selectively alerting party line subscribersExpiredOct 15, 85Feb 02, 88[H04M]
4677665 Method and apparatus for electronically detecting speech and toneExpiredMar 08, 85Jun 30, 87[H04M]
4663775 Method and apparatus for testing remote communication systemsExpiredOct 26, 84May 05, 87[H04M]
4629836 Method and apparatus for accessing communication systemsExpiredAug 29, 84Dec 16, 86[H04B]
4611101 Method and apparatus for testing communication systemsExpiredAug 29, 84Sep 09, 86[H04B]
4574167 Method and apparatus for configurable line testingExpiredAug 29, 84Mar 04, 86[H04B]

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