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Selenium rectifier
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Patent number 3,935,582
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Issue date Jan 27, 1976
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International Standard Electric Corporation
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John Duckles Underwood
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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3694908
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Patent number 3,694,908
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Issue date Oct 3, 1972
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H01 - BASIC ELECTRIC ELEMENTS
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3622712
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Patent number 3,622,712
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Issue date Nov 23, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3599058
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Patent number 3,599,058
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Issue date Aug 10, 1971
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H01 - BASIC ELECTRIC ELEMENTS
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3514323
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Patent number 3,514,323
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Issue date May 26, 1970
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C30 - CRYSTAL GROWTH
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2914837
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Patent number 2,914,837
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Issue date Dec 1, 1959
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H01 - BASIC ELECTRIC ELEMENTS
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2910039
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Patent number 2,910,039
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Issue date Oct 27, 1959
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2908592
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Patent number 2,908,592
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Issue date Oct 13, 1959
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2867550
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Patent number 2,867,550
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Issue date Jan 6, 1959
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2819433
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Patent number 2,819,433
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Issue date Jan 7, 1958
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H01 - BASIC ELECTRIC ELEMENTS
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2768098
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Patent number 2,768,098
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Issue date Oct 23, 1956
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2767682
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Patent number 2,767,682
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Issue date Oct 23, 1956
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2736672
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Patent number 2,736,672
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Issue date Feb 28, 1956
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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2649409
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Patent number 2,649,409
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Issue date Aug 18, 1953
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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2649410
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Patent number 2,649,410
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Issue date Aug 18, 1953
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C01 - INORGANIC CHEMISTRY
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2599478
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Patent number 2,599,478
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Issue date Jun 3, 1952
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H01 - BASIC ELECTRIC ELEMENTS
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2568780
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Patent number 2,568,780
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Issue date Sep 25, 1951
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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2501798
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Patent number 2,501,798
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Issue date Mar 28, 1950
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H01 - BASIC ELECTRIC ELEMENTS
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2479301
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Patent number 2,479,301
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Issue date Aug 16, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2476042
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Patent number 2,476,042
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Issue date Jul 12, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2468527
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Patent number 2,468,527
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Issue date Apr 26, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2462157
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Patent number 2,462,157
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Issue date Feb 22, 1949
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H01 - BASIC ELECTRIC ELEMENTS
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2453763
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Patent number 2,453,763
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Issue date Nov 16, 1948
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H01 - BASIC ELECTRIC ELEMENTS
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2433401
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Patent number 2,433,401
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Issue date Dec 30, 1947
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H01 - BASIC ELECTRIC ELEMENTS
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2428055
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Patent number 2,428,055
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Issue date Sep 30, 1947
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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2426377
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Patent number 2,426,377
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Issue date Aug 26, 1947
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2426173
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Patent number 2,426,173
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Issue date Aug 26, 1947
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H01 - BASIC ELECTRIC ELEMENTS
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2423051
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Patent number 2,423,051
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Issue date Jun 24, 1947
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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2414438
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Patent number 2,414,438
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Issue date Jan 21, 1947
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H01 - BASIC ELECTRIC ELEMENTS