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2496721
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Issue date Feb 7, 1950
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H01 - BASIC ELECTRIC ELEMENTS
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2394056
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Issue date Feb 5, 1946
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H01 - BASIC ELECTRIC ELEMENTS
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2215890
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H01 - BASIC ELECTRIC ELEMENTS
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2197632
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Patent number 2,197,632
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H01 - BASIC ELECTRIC ELEMENTS
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2139791
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H01 - BASIC ELECTRIC ELEMENTS
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2133745
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Patent number 2,133,745
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H01 - BASIC ELECTRIC ELEMENTS
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2095782
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Patent number 2,095,782
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Issue date Oct 12, 1937
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H01 - BASIC ELECTRIC ELEMENTS
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2094642
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Patent number 2,094,642
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Issue date Oct 5, 1937
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H01 - BASIC ELECTRIC ELEMENTS
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2049472
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Patent number 2,049,472
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Issue date Aug 4, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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2046686
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Patent number 2,046,686
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Issue date Jul 7, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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2036707
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Patent number 2,036,707
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Issue date Apr 7, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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1995200
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Patent number 1,995,200
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H01 - BASIC ELECTRIC ELEMENTS
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1980042
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Patent number 1,980,042
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Issue date Nov 6, 1934
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H01 - BASIC ELECTRIC ELEMENTS
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1976556
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H01 - BASIC ELECTRIC ELEMENTS
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1926132
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Patent number 1,926,132
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Issue date Sep 12, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1905724
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H01 - BASIC ELECTRIC ELEMENTS
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1901563
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H01 - BASIC ELECTRIC ELEMENTS
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1892832
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H01 - BASIC ELECTRIC ELEMENTS
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1866351
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H01 - BASIC ELECTRIC ELEMENTS
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1844925
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H01 - BASIC ELECTRIC ELEMENTS
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1844928
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H01 - BASIC ELECTRIC ELEMENTS
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1811603
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H01 - BASIC ELECTRIC ELEMENTS
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1769852
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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1757284
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H01 - BASIC ELECTRIC ELEMENTS
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1749549
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H01 - BASIC ELECTRIC ELEMENTS