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Face mask
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Patent number D975268
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Issue date Jan 10, 2023
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Robert T. Bayer
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D24 - Medical and laboratory equipment
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-
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Facemask
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Patent number D770691
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Issue date Nov 1, 2016
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Robert T. Bayer
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D29 - Equipment for safety, protection, and rescue
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-
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Method for sterilizing an article
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Patent number 6,630,104
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Issue date Oct 7, 2003
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Cardinal Health 200, Inc.
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Robert T. Bayer
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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-
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Disposable face mask
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Patent number 5,735,270
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Issue date Apr 7, 1998
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Robert T. Bayer
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A41 - WEARING APPAREL
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Face mask
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Patent number D382052
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Issue date Aug 5, 1997
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Robert T. Bayer
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D24 - Medical and laboratory equipment
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Flood water containment bag
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Patent number 4,650,368
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Issue date Mar 17, 1987
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American Threshold Industries, Inc.
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Robert T. Bayer
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING