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High voltage control devices
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Patent number 4,358,641
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Issue date Nov 9, 1982
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GTE Laboratories Incorporated
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Joseph M. Proud
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H01 - BASIC ELECTRIC ELEMENTS
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High voltage control devices
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Patent number 4,259,593
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Issue date Mar 31, 1981
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GTE Laboratories Incorporated
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Joseph M. Proud
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H01 - BASIC ELECTRIC ELEMENTS
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High voltage control devices
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Patent number 4,185,206
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Issue date Jan 22, 1980
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GTE Laboratories Incorporated
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Joseph M. Proud
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H01 - BASIC ELECTRIC ELEMENTS
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Electrolytic resistor
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Patent number 4,112,409
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Issue date Sep 5, 1978
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Compagnie Generale d'Electricite S.A.
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Jean Jacquelin
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H01 - BASIC ELECTRIC ELEMENTS
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Polyphase liquid rheostat
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Patent number 3,935,554
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Issue date Jan 27, 1976
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Siemens Aktiengesellschaft
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Kurt Rabus
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H01 - BASIC ELECTRIC ELEMENTS
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3845448
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Patent number 3,845,448
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Issue date Oct 29, 1974
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H01 - BASIC ELECTRIC ELEMENTS
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3539470
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Patent number 3,539,470
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Issue date Nov 10, 1970
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H01 - BASIC ELECTRIC ELEMENTS
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3412198
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Patent number 3,412,198
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Issue date Nov 19, 1968
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H01 - BASIC ELECTRIC ELEMENTS
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3271584
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Patent number 3,271,584
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Issue date Sep 6, 1966
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G05 - CONTROLLING REGULATING
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3271719
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Patent number 3,271,719
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Issue date Sep 6, 1966
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H03 - BASIC ELECTRONIC CIRCUITRY
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2261974
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Patent number 2,261,974
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Issue date Nov 11, 1941
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H01 - BASIC ELECTRIC ELEMENTS
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1917331
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Patent number 1,917,331
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Issue date Jul 11, 1933
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H01 - BASIC ELECTRIC ELEMENTS
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1686022
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Patent number 1,686,022
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Issue date Oct 2, 1928
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H01 - BASIC ELECTRIC ELEMENTS
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1621832
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Patent number 1,621,832
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Issue date Mar 22, 1927
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H01 - BASIC ELECTRIC ELEMENTS