Inventor

OSA TAKASHI

JP6 patents

Patents

6 patents

US5743269AApr 28, 1998

Cardiotachometer

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US6593901B1Jul 15, 2003

Electronic device

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US5339293AAug 16, 1994

Watch with hands for multiple time displays

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US5237544AAug 17, 1993

Analog world watch

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US5195062AMar 16, 1993

Display device

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US7400556B2Jul 15, 2008

Electronic timepiece with solar cell

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