MICROWAVE FILTER COMPANY, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5093921 Initialization technique and apparatus for set top convertersExpiredDec 19, 89Mar 03, 92[H04B]
5060262 Video scrambling, audio masking and data transmission methods for wireless cable systemsExpiredMay 07, 90Oct 22, 91[H04N]
4760597 Technician set-up unit for and method of cable television converter installation and address assignmentExpiredApr 16, 85Jul 26, 88[H04N, H04H]
4718107 Parental control for CATV convertersExpiredFeb 14, 86Jan 05, 88[H04N, H04H]
4677467 CATV addressable converter with multi-purpose, bi-directional serial digital data portExpiredApr 16, 85Jun 30, 87[H04N]

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