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Controller
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Patent number 10,863,228
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Issue date Dec 8, 2020
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PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
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Norikazu Kaneshiro
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Keyboard with replaceable keys
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Patent number 8,253,047
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Issue date Aug 28, 2012
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Fu Tai Hua Industry (Shenzhen) Co., Ltd.
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Man-Tian Liu
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H01 - BASIC ELECTRIC ELEMENTS
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Planar multiple switch
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Patent number 4,207,444
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Issue date Jun 10, 1980
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Kley, Fitting, Fitting, Nalley and Smith
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Victor B. Kley
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G06 - COMPUTING CALCULATING COUNTING
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Graphical data entry pad
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Patent number 4,079,194
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Issue date Mar 14, 1978
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Victor Kley
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G06 - COMPUTING CALCULATING COUNTING
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3862382
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Patent number 3,862,382
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Issue date Jan 21, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3761944
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Patent number 3,761,944
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Issue date Sep 25, 1973
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H03 - BASIC ELECTRONIC CIRCUITRY
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3742157
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Patent number 3,742,157
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Issue date Jun 26, 1973
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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3600528
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Patent number 3,600,528
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Issue date Aug 17, 1971
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS