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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
PPG Industries Ohio, Inc.
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C03 - GLASS MINERAL OR SLAG WOOL
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Patent Grant
PPG Industries Ohio, Inc.
Alan E. Wang
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Patent Grant
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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C07 - ORGANIC CHEMISTRY
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Patent Grant
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Patent Grant
PPG Industries, Inc.
William C. Allison
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
PPG Industries, Inc.
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C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Patent Application
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent Application
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C03 - GLASS MINERAL OR SLAG WOOL
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Patent Application
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C03 - GLASS MINERAL OR SLAG WOOL
