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Patent number 5,165,529
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Issue date Nov 24, 1992
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Jimbo Electric Co., Ltd.
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Shiori Fujiyoshi
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H01 - BASIC ELECTRIC ELEMENTS
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3852557
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Patent number 3,852,557
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Issue date Dec 3, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3746809
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Patent number 3,746,809
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Issue date Jul 17, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3051803
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Patent number 3,051,803
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Issue date Aug 28, 1962
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H01 - BASIC ELECTRIC ELEMENTS
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2961505
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Patent number 2,961,505
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Issue date Nov 22, 1960
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H01 - BASIC ELECTRIC ELEMENTS
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2927983
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Patent number 2,927,983
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Issue date Mar 8, 1960
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H01 - BASIC ELECTRIC ELEMENTS
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2792464
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Patent number 2,792,464
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Issue date May 14, 1957
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H01 - BASIC ELECTRIC ELEMENTS
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2753411
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Patent number 2,753,411
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Issue date Jul 3, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2669613
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Patent number 2,669,613
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Issue date Feb 16, 1954
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H01 - BASIC ELECTRIC ELEMENTS
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1516440
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Patent number 1,516,440
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Issue date Nov 18, 1924
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H01 - BASIC ELECTRIC ELEMENTS