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Microwave oven window
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Patent number 4,264,800
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Issue date Apr 28, 1981
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Minnesota Mining and Manufacturing Company
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Merlin R. Jahnke
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Microwave oven window construction
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Patent number 4,215,258
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Issue date Jul 29, 1980
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Minnesota Mining and Manufacturing Company
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Alfred D. Nelson
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Matrix construction for fuel cells
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Patent number 4,007,058
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Issue date Feb 8, 1977
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Minnesota Mining and Manufacturing Company
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Alfred Dwayne Nelson
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H01 - BASIC ELECTRIC ELEMENTS
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Adhesively bonded rail joint
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Patent number 3,952,948
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Issue date Apr 27, 1976
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Minnesota Mining and Manufacturing Company
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Alfred Dwayne Nelson
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL