Yagi Antenna Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6195034 Radio wave absorbing panelExpiredJun 04, 99Feb 27, 01[H01Q]
5150365 Communication system for coexistent base band and broad band signalsExpiredJul 05, 90Sep 22, 92[H04J]
4987424 Film antenna apparatusExpiredNov 13, 89Jan 22, 91[H01Q]
D308972 Television receiving antennaExpiredFeb 19, 86Jul 03, 90[]
4864632 Indoor wiring system for VHF/UHF signal linesExpiredNov 24, 86Sep 05, 89[H04H]
D295517 Television receiving antennaExpiredJun 10, 85May 03, 88[]
4626789 Demodulating circuit for data signalExpiredAug 10, 84Dec 02, 86[H03D]
4617565 Method and device for data communicationExpiredOct 03, 83Oct 14, 86[H04Q, H04B]
4602252 Method and device for data communicationExpiredDec 28, 82Jul 22, 86[H04N, H04Q]
4573154 Data communication system with error detection/correctionExpiredOct 03, 83Feb 25, 86[H04L]
4547751 System for frequency modulationExpiredMay 06, 83Oct 15, 85[H03C]
4516221 Data communication systemExpiredJun 21, 82May 07, 85[H04B]
4334214 Warning apparatus using microwavesExpiredJun 18, 80Jun 08, 82[G08B, G08G]

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