Calculators

Historical Document · 1984

US Patent 4,430,531: Snap Disc Keyboard (Hewlett-Packard, Voyager)

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The Voyager series' snap-disc keyboard: filed 15 March 1982, granted 7 February 1984.

Author
Wright
Year
1984
Type
Historical Document
Credit
US Patent and Trademark Office; via Google Patents.

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US Patent 4,430,531: Snap Disc Keyboard (Hewlett-Packard, Voyager)