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Variable resistor
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Patent number 4,283,704
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Issue date Aug 11, 1981
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Alps Electric Co., Ltd.
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Takeshi Ohtani
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H01 - BASIC ELECTRIC ELEMENTS
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3629776
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Patent number 3,629,776
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Issue date Dec 21, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3602867
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Patent number 3,602,867
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Issue date Aug 31, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3564475
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Patent number 3,564,475
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Issue date Feb 16, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3341790
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Patent number 3,341,790
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Issue date Sep 12, 1967
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H03 - BASIC ELECTRONIC CIRCUITRY
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2061106
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Patent number 2,061,106
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Issue date Nov 17, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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1948354
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Patent number 1,948,354
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Issue date Feb 20, 1934
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H01 - BASIC ELECTRIC ELEMENTS