Historical Document · 1974

US Patent 3,803,834: Wristwatch Calculator (Time Computer, Pulsar)

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Time Computer's wristwatch calculator: filed 6 February 1973, granted 16 April 1974; shared display, conductive-plastic or stylus keys.

Author

Robert O. Reese

Year

1974

Type

Historical Document

Credit

US Patent and Trademark Office; via Google Patents.

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