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3895430
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Patent number 3,895,430
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Issue date Jul 22, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3737701
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Patent number 3,737,701
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Issue date Jun 5, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3458782
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Patent number 3,458,782
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Issue date Jul 29, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3440477
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Patent number 3,440,477
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Issue date Apr 22, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3428850
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Patent number 3,428,850
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Issue date Feb 18, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3419746
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Patent number 3,419,746
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Issue date Dec 31, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3403284
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Patent number 3,403,284
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Issue date Sep 24, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3403278
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Patent number 3,403,278
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Issue date Sep 24, 1968
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H01 - BASIC ELECTRIC ELEMENTS