(under subclass 137) Inventions for the removal of natural sericin or other naturally occurring gum or wax, or an artificially applied size or gum from textile fibers.
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930, for degumming in connection with dyeing.
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19, Textiles: Fiber Preparation, for the mechanical removal of silk from cocoons.
162, Paper Making and Fiber Liberation, particularly 2, for the freeing of silk from their cocoons.
435, Chemistry: Molecular Biology and Microbiology,
263, for degumming or desizing by means of enzymes.