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Transparent touch panel switch
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Patent number 4,786,767
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Issue date Nov 22, 1988
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Southwall Technologies Inc.
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Bruce Kuhlman
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H01 - BASIC ELECTRIC ELEMENTS
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Keyboard switch
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Patent number 4,678,880
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Issue date Jul 7, 1987
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Omron Tateisi Electronics Co.
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Haruyuki Koizumi
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H01 - BASIC ELECTRIC ELEMENTS
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Membrane switch
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Patent number 4,415,781
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Issue date Nov 15, 1983
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W. H. Brady Co.
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Norman J. Frame
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H01 - BASIC ELECTRIC ELEMENTS
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Switching contact
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Patent number 4,405,849
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Issue date Sep 20, 1983
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W. H. Brady Co.
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Norman J. Frame
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H01 - BASIC ELECTRIC ELEMENTS
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Capacitance switch
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Patent number 4,373,124
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Issue date Feb 8, 1983
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W. H. Brady Co.
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Norman J. Frame
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H03 - BASIC ELECTRONIC CIRCUITRY
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Capacitance switch
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Patent number 4,373,122
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Issue date Feb 8, 1983
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W. H. Brady Co.
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Norman J. Frame
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H03 - BASIC ELECTRONIC CIRCUITRY
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Capacitance switch
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Patent number 4,367,385
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Issue date Jan 4, 1983
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W. H. Brady Co.
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Norman J. Frame
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H03 - BASIC ELECTRONIC CIRCUITRY
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Membrane touch switch
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Patent number 4,317,011
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Issue date Feb 23, 1982
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Chicago Decal Company
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Louis R. Mazurk
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H01 - BASIC ELECTRIC ELEMENTS
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Pressure transducer
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Patent number 4,314,228
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Issue date Feb 2, 1982
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Franklin N. Eventoff
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H01 - BASIC ELECTRIC ELEMENTS
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3743797
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Patent number 3,743,797
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Issue date Jul 3, 1973
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3681723
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Patent number 3,681,723
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Issue date Aug 1, 1972
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H01 - BASIC ELECTRIC ELEMENTS