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Seiko Koki KK

Seiko Koki

Active Patents

0

Total Holdings

4

Patent Holdings

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Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US4497560A	Control circuit for active type range finder	Expired / Lapsed	1983-01-10	1985-02-05	23	Details
US4267440A	Focus detecting system	Expired / Lapsed	1979-03-27	1981-05-12	6	Details
US4104859A	Reversal preventing device of electric clock	Expired / Lapsed	1976-05-13	1978-08-08	7	Details
US4037400A	Drive device for electric clock	Expired / Lapsed	1976-04-06	1977-07-26	4	Details