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Reagent-loaded pencils and methods
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Patent number 10,343,168
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Issue date Jul 9, 2019
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Cal Poly Corporation
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Andres W. Martinez
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Apparatus for trimming an extrudate
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Patent number 4,057,456
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Issue date Nov 8, 1977
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Hasbro Industries, Inc.
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Charles Gwin Renegar
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3704071
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Patent number 3,704,071
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Issue date Nov 28, 1972
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1362095
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Patent number 1,362,095
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Issue date Dec 14, 1920
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES