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Pneumatic granule blender for asphalt shingles
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Patent number 5,746,830
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Issue date May 5, 1998
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Owens Corning Fiberglas Technology, Inc.
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Charles A. Burton
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Door positioning system
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Patent number 5,377,448
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Issue date Jan 3, 1995
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American Metal Door Company, Inc.
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Douglas E. Boyd
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E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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Ballast
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Patent number 4,916,363
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Issue date Apr 10, 1990
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Valmont Industries, Inc.
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Charles A. Burton
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H01 - BASIC ELECTRIC ELEMENTS
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Automatic ladling apparatus
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Patent number 4,516,699
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Issue date May 14, 1985
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Yellowstone Ltd.
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Charles A. Burton
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B22 - CASTING POWDER METALLURGY
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