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Making ice in a refrigerator
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Patent number 4,912,939
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Issue date Apr 3, 1990
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Eaton Corporation
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George Obermann
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Electronic flow transducer assembly
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Patent number 4,581,944
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Issue date Apr 15, 1986
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Controls Company of America
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George Obermann
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Switch construction
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Patent number 4,533,803
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Issue date Aug 6, 1985
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The Singer Company
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Wilbert E. Beller
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H01 - BASIC ELECTRIC ELEMENTS
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Dryer timer
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Patent number 4,463,225
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Issue date Jul 31, 1984
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The Singer Company
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George Obermann
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H01 - BASIC ELECTRIC ELEMENTS
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Variable step size impulse drive
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Patent number 4,179,945
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Issue date Dec 25, 1979
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The Singer Company
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George Obermann
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...