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CPC
D21C9/1094

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DTEXTILES PAPER D21Papermaking D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR D21C9/00After-treatment of cellulose pulp

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D21C9/1094with H2

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Patents Grantslast 30 patents

Information Patent Grant
1846093
- Patent number 1,846,093
- Issue date Feb 23, 1932
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE