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Disconnect switch
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Patent number 4,414,451
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Issue date Nov 8, 1983
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Brown, Boveri & Cie AG
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Rolf Bleidt
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Rotary disconnect switch
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Patent number 4,389,553
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Issue date Jun 21, 1983
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Brown, Boveri & Cie AG
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Werner Konig
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Density monitoring apparatus
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Patent number 4,214,474
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Issue date Jul 29, 1980
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BBC Brown, Boveri & Co., Ltd.
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Rolf Bleidt
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G01 - MEASURING TESTING