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Method for reducing surface gloss
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Patent number 4,289,798
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Issue date Sep 15, 1981
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Armstrong World Industries, Inc.
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George E. Bagley
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Corona discharge device
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Patent number 4,275,301
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Issue date Jun 23, 1981
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Armstrong Cork Company
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Werner Rueggeberg
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Microwave oven apparatus
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Patent number 4,185,182
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Issue date Jan 22, 1980
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Armstrong Cork Company
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Werner Rueggeberg
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H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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Microwave energy trap
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Patent number 4,176,267
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Issue date Nov 27, 1979
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Armstrong Cork Company
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Werner Rueggeberg
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B82 - NANO-TECHNOLOGY
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Microwave applicator device
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Patent number 4,160,145
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Issue date Jul 3, 1979
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Armstrong Cork Company
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Werner Rueggeberg
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H01 - BASIC ELECTRIC ELEMENTS