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Gottfried Burkhardt
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Winkelhaid, DE
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last 30 patents
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Patent Grant
Key operated switch for keyboard
Patent number
4,713,507
Issue date
Dec 15, 1987
Gottfried Burkhardt
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Key operated printed circuit switch
Patent number
4,707,578
Issue date
Nov 17, 1987
Triumph-Adler A.G.
Gottfried Burkhardt
H01 - BASIC ELECTRIC ELEMENTS