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1741333
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Patent number 1,741,333
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Issue date Dec 31, 1929
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H01 - BASIC ELECTRIC ELEMENTS
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1710880
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Patent number 1,710,880
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Issue date Apr 30, 1929
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H01 - BASIC ELECTRIC ELEMENTS
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1567201
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Patent number 1,567,201
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Issue date Dec 29, 1925
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H01 - BASIC ELECTRIC ELEMENTS
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1552664
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Patent number 1,552,664
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Issue date Sep 8, 1925
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H01 - BASIC ELECTRIC ELEMENTS
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1521743
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Patent number 1,521,743
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Issue date Jan 6, 1925
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H01 - BASIC ELECTRIC ELEMENTS
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1501732
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H01 - BASIC ELECTRIC ELEMENTS
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1431961
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H01 - BASIC ELECTRIC ELEMENTS
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1291217
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H01 - BASIC ELECTRIC ELEMENTS
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1250387
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H01 - BASIC ELECTRIC ELEMENTS
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1245940
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H01 - BASIC ELECTRIC ELEMENTS
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H01 - BASIC ELECTRIC ELEMENTS
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H01 - BASIC ELECTRIC ELEMENTS
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887877
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER