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Multiple contact switch
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Patent number 6,255,615
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Issue date Jul 3, 2001
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Clive William Kimblin
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum detector
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Patent number 4,471,309
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Issue date Sep 11, 1984
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Westinghouse Electric Corp.
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William J. Lange
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G01 - MEASURING TESTING
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Current limiter vacuum envelope
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Patent number 4,267,415
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Issue date May 12, 1981
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Electric Power Research Institute
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Francis A. Holmes
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H01 - BASIC ELECTRIC ELEMENTS
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Vacuum fault current limiter
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Patent number 4,021,628
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Issue date May 3, 1977
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Westinghouse Electric Corporation
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Clive W. Kimblin
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H01 - BASIC ELECTRIC ELEMENTS
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