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Keypad
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Patent number 7,742,040
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Issue date Jun 22, 2010
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Andrew R Jamieson
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H01 - BASIC ELECTRIC ELEMENTS
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Keypad
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Patent number 7,133,029
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Issue date Nov 7, 2006
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MCOM Solutions Inc.
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Andrew R Jamieson
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H01 - BASIC ELECTRIC ELEMENTS
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Tactile switch unit
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Patent number 6,800,819
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Issue date Oct 5, 2004
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Japan Aviation Electronics Industry Limited
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Mitsunori Sato
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H01 - BASIC ELECTRIC ELEMENTS
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-
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Panel switch
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Patent number 5,121,091
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Issue date Jun 9, 1992
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Matsushita Electric Industrial Co., Ltd.
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Terumi Fujiyama
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H01 - BASIC ELECTRIC ELEMENTS
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Panel switch
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Patent number 4,977,298
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Issue date Dec 11, 1990
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Matsushita Electric Industrial Co., Ltd.
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Terumi Fujiyama
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H01 - BASIC ELECTRIC ELEMENTS
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Matrix keyboard
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Patent number 4,567,469
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Issue date Jan 28, 1986
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Polytel Corp.
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Sherif Danish
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H03 - BASIC ELECTRONIC CIRCUITRY
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Keybar keyboard
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Patent number 4,440,515
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Issue date Apr 3, 1984
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International Business Machines Corporation
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Ernie G. Nassimbene
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H01 - BASIC ELECTRIC ELEMENTS
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-
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3909564
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Patent number 3,909,564
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Issue date Sep 30, 1975
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H04 - ELECTRIC COMMUNICATION TECHNIQUE