NAKAMURA KIKI ENGINEERING CO., LTD.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5247292 Sensor signal transmission systemExpiredSep 25, 90Sep 21, 93[G08C]
5223826 Control/supervisory signal transmission systemExpiredJun 01, 90Jun 29, 93[G05B]
4937568 Signal serial/parallel conversion systemExpiredAug 26, 88Jun 26, 90[H04Q, H04B]
4889164 Solenoid controlled valveExpiredJun 20, 88Dec 26, 89[F15B]
4854346 Control apparatus for manifold type electromagnetic valve deviceExpiredAug 22, 88Aug 08, 89[F16K]

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