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3904449
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Issue date Sep 9, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3885061
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Patent number 3,885,061
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Issue date May 20, 1975
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H01 - BASIC ELECTRIC ELEMENTS
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3762945
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Patent number 3,762,945
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Issue date Oct 2, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3737737
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Patent number 3,737,737
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Issue date Jun 5, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3736158
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Patent number 3,736,158
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Issue date May 29, 1973
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C30 - CRYSTAL GROWTH
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3721583
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Patent number 3,721,583
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Issue date Mar 20, 1973
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H01 - BASIC ELECTRIC ELEMENTS
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3668555
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Patent number 3,668,555
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Issue date Jun 6, 1972
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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3323954
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Patent number 3,323,954
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Issue date Jun 6, 1967
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C30 - CRYSTAL GROWTH
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3208888
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Issue date Sep 28, 1965
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H01 - BASIC ELECTRIC ELEMENTS