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B27K · Processes, apparatus or selection of substances for impregnating, staining, dyeing,…
Processes, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for; chemical or physical treatment of cork, cane, reed, straw or similar materials. Patents classified in CPC B27K, part of Manufacturing and transport.
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