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3346751
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Patent number 3,346,751
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Issue date Oct 10, 1967
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H01 - BASIC ELECTRIC ELEMENTS
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3331526
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Patent number 3,331,526
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Issue date Jul 18, 1967
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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3198371
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Patent number 3,198,371
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Issue date Aug 3, 1965
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H01 - BASIC ELECTRIC ELEMENTS
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3109284
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Patent number 3,109,284
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Issue date Nov 5, 1963
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F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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2684777
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Patent number 2,684,777
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Issue date Jul 27, 1954
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H01 - BASIC ELECTRIC ELEMENTS
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2624008
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Patent number 2,624,008
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Issue date Dec 30, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2594753
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Patent number 2,594,753
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Issue date Apr 29, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2465373
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Patent number 2,465,373
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Issue date Mar 29, 1949
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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2298950
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Patent number 2,298,950
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Issue date Oct 13, 1942
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H01 - BASIC ELECTRIC ELEMENTS
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2289164
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Patent number 2,289,164
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Issue date Jul 7, 1942
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H01 - BASIC ELECTRIC ELEMENTS
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2125113
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Patent number 2,125,113
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Issue date Jul 26, 1938
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G01 - MEASURING TESTING
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2097850
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Patent number 2,097,850
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Issue date Nov 2, 1937
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F21 - LIGHTING
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2047959
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Patent number 2,047,959
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Issue date Jul 21, 1936
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H01 - BASIC ELECTRIC ELEMENTS
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1937865
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Patent number 1,937,865
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Issue date Dec 5, 1933
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C03 - GLASS MINERAL OR SLAG WOOL
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1660381
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Patent number 1,660,381
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Issue date Feb 28, 1928
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H01 - BASIC ELECTRIC ELEMENTS
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1498321
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Patent number 1,498,321
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Issue date Jun 17, 1924
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H01 - BASIC ELECTRIC ELEMENTS
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1450964
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Patent number 1,450,964
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Issue date Apr 10, 1923
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H01 - BASIC ELECTRIC ELEMENTS
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1439471
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Patent number 1,439,471
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Issue date Dec 19, 1922
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H01 - BASIC ELECTRIC ELEMENTS