D21H
Pulp compositions; preparation thereof not covered by subclasses [cpc: d21c] or [cpc: d21d]; impregnating or coating of paper; treatment of finished paper not covered by class [cpc: b31] or subclass [cpc: d21g]; paper not otherwise provided for
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Edits on 16 Mar, 2022
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D21H
Pulp compositions; preparation thereof not covered by subclasses [cpc: d21c] or [cpc: d21d]; impregnating or coating of paper; treatment of finished paper not covered by class [cpc: b31] or subclass [cpc: d21g]; paper not otherwise provided for
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