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Issue date Apr 29, 1969
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H01 - BASIC ELECTRIC ELEMENTS
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3416018
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Issue date Dec 10, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3134921
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H01 - BASIC ELECTRIC ELEMENTS
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2933635
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H01 - BASIC ELECTRIC ELEMENTS
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2907905
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H01 - BASIC ELECTRIC ELEMENTS
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2726898
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H01 - BASIC ELECTRIC ELEMENTS
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2573619
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H01 - BASIC ELECTRIC ELEMENTS
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2501308
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Patent number 2,501,308
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H01 - BASIC ELECTRIC ELEMENTS
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2459828
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H01 - BASIC ELECTRIC ELEMENTS
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2451938
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Issue date Oct 19, 1948
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H01 - BASIC ELECTRIC ELEMENTS
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2433181
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H01 - BASIC ELECTRIC ELEMENTS
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2367966
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H01 - BASIC ELECTRIC ELEMENTS
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2340670
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H01 - BASIC ELECTRIC ELEMENTS
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2333525
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H01 - BASIC ELECTRIC ELEMENTS
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2320685
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Issue date Jun 1, 1943
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H01 - BASIC ELECTRIC ELEMENTS
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2313029
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Issue date Mar 2, 1943
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H01 - BASIC ELECTRIC ELEMENTS
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2308939
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Issue date Jan 19, 1943
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H01 - BASIC ELECTRIC ELEMENTS
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2286829
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Patent number 2,286,829
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H01 - BASIC ELECTRIC ELEMENTS
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2286755
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Patent number 2,286,755
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Issue date Jun 16, 1942
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H01 - BASIC ELECTRIC ELEMENTS
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2286802
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Patent number 2,286,802
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Issue date Jun 16, 1942
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H01 - BASIC ELECTRIC ELEMENTS
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2276046
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Patent number 2,276,046
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Issue date Mar 10, 1942
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H01 - BASIC ELECTRIC ELEMENTS
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2265001
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Patent number 2,265,001
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Issue date Dec 2, 1941
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H01 - BASIC ELECTRIC ELEMENTS
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2209819
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Patent number 2,209,819
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Issue date Jul 30, 1940
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2148300
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Issue date Feb 21, 1939
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H01 - BASIC ELECTRIC ELEMENTS
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2125131
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H01 - BASIC ELECTRIC ELEMENTS
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2059037
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H01 - BASIC ELECTRIC ELEMENTS
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2052831
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H01 - BASIC ELECTRIC ELEMENTS
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2042535
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H01 - BASIC ELECTRIC ELEMENTS
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2022509
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H01 - BASIC ELECTRIC ELEMENTS