Assignee

HEIWADO BOEKI KABUSHIKI KAISHA

2 granted patents·12 citations·filing 1975–1979

Technology mixG04B2 G04C1

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2 records

0137US4276632AHatch locking mechanism for the battery compartment of a wristwatchHEIWADO BOEKI KABUSHIKI KAISHA·Filed 1979·Granted Jun 30, 1981·7 cites·17 claims
0232US3948038ACoupling structure of watchcaseHEIWADO BOEKI KABUSHIKI KAISHA·Filed 1975·Granted Apr 6, 1976·5 cites·6 claims

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