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3270124
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Patent number 3,270,124
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Issue date Aug 30, 1966
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H01 - BASIC ELECTRIC ELEMENTS
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3198878
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Patent number 3,198,878
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Issue date Aug 3, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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3196204
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Patent number 3,196,204
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Issue date Jul 20, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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2616976
-
Patent number 2,616,976
-
Issue date Nov 4, 1952
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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1939760
-
Patent number 1,939,760
-
Issue date Dec 19, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1858611
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Patent number 1,858,611
-
Issue date May 17, 1932
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H01 - BASIC ELECTRIC ELEMENTS
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1811530
-
Patent number 1,811,530
-
Issue date Jun 23, 1931
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H01 - BASIC ELECTRIC ELEMENTS
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1806854
-
Patent number 1,806,854
-
Issue date May 26, 1931
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H01 - BASIC ELECTRIC ELEMENTS
-
1763196
-
Patent number 1,763,196
-
Issue date Jun 10, 1930
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H01 - BASIC ELECTRIC ELEMENTS
-
1412759
-
Patent number 1,412,759
-
Issue date Apr 11, 1922
-
H01 - BASIC ELECTRIC ELEMENTS
-
1391576
-
Patent number 1,391,576
-
Issue date Sep 20, 1921
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H01 - BASIC ELECTRIC ELEMENTS