Inventor

YOSHIDA YOSHISABURO

JP4 patents

Patents

4 patents

US4336530AJun 22, 1982

Thin keyboard with changeable key indicia

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US4209735AJun 24, 1980

Solar battery powered electronic calculator

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USD245765SSep 13, 1977

Clock

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USD246351SNov 15, 1977

Digital clock

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