Yokowo Mfg. Co., Ltd

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5201060 Baseband signal communication apparatusExpiredApr 16, 90Apr 06, 93[H04B]
5122809 Microwave electric power receiverExpiredAug 23, 91Jun 16, 92[H01Q]
5119099 Microwave responderExpiredMay 21, 90Jun 02, 92[G01S]
5089829 Antenna device shared by three kinds of wavesExpiredAug 01, 90Feb 18, 92[H01Q]
4963887 Full duplex transponder systemExpiredAug 29, 89Oct 16, 90[H01R]
4716382 Microwave amplifying apparatusExpiredOct 24, 86Dec 29, 87[H03F]
4709127 Contact arrangement with spacers separating contact levers from each otherExpiredOct 24, 86Nov 24, 87[H01H]

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