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3462573
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H01 - BASIC ELECTRIC ELEMENTS
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3328546
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H01 - BASIC ELECTRIC ELEMENTS
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3296566
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Issue date Jan 3, 1967
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G08 - SIGNALLING
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3290467
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G01 - MEASURING TESTING
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3085179
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Patent number 3,085,179
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Issue date Apr 9, 1963
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H01 - BASIC ELECTRIC ELEMENTS
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3085178
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Patent number 3,085,178
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Issue date Apr 9, 1963
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H01 - BASIC ELECTRIC ELEMENTS
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3010004
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Patent number 3,010,004
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H01 - BASIC ELECTRIC ELEMENTS
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2785249
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Patent number 2,785,249
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Issue date Mar 12, 1957
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H01 - BASIC ELECTRIC ELEMENTS
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2778900
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Patent number 2,778,900
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H01 - BASIC ELECTRIC ELEMENTS
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2752444
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Patent number 2,752,444
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Issue date Jun 26, 1956
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H01 - BASIC ELECTRIC ELEMENTS
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2738395
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Patent number 2,738,395
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H01 - BASIC ELECTRIC ELEMENTS
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2734109
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Patent number 2,734,109
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Issue date Feb 7, 1956
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2696537
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Patent number 2,696,537
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Issue date Dec 7, 1954
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H01 - BASIC ELECTRIC ELEMENTS
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2673265
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Patent number 2,673,265
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H01 - BASIC ELECTRIC ELEMENTS
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2649510
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Patent number 2,649,510
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H01 - BASIC ELECTRIC ELEMENTS
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2644870
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Patent number 2,644,870
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Issue date Jul 7, 1953
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H01 - BASIC ELECTRIC ELEMENTS
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2564081
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Patent number 2,564,081
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H01 - BASIC ELECTRIC ELEMENTS
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2562626
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Patent number 2,562,626
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H01 - BASIC ELECTRIC ELEMENTS
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2545669
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Patent number 2,545,669
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Issue date Mar 20, 1951
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H01 - BASIC ELECTRIC ELEMENTS
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2540479
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Patent number 2,540,479
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Issue date Feb 6, 1951
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H01 - BASIC ELECTRIC ELEMENTS
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2539259
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Patent number 2,539,259
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H01 - BASIC ELECTRIC ELEMENTS
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2523366
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Patent number 2,523,366
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Issue date Sep 26, 1950
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H01 - BASIC ELECTRIC ELEMENTS
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2520525
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Patent number 2,520,525
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H01 - BASIC ELECTRIC ELEMENTS
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2492875
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Issue date Dec 27, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2491986
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Issue date Dec 20, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2442981
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H01 - BASIC ELECTRIC ELEMENTS
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2325785
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H01 - BASIC ELECTRIC ELEMENTS
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2288451
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H01 - BASIC ELECTRIC ELEMENTS