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AC Motor drive
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Patent number 4,242,626
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Issue date Dec 30, 1980
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Jet Spray Cooler, Inc.
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Thomas A. O. Gross
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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3389316
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Patent number 3,389,316
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Issue date Jun 18, 1968
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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3211982
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Patent number 3,211,982
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Issue date Oct 12, 1965
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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2186254
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Patent number 2,186,254
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Issue date Jan 9, 1940
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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1561017
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Patent number 1,561,017
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Issue date Nov 10, 1925
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER