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Patent № 2019411 A1 (CA). D21C9/10, C12P1/00, C12S3/08, C12N9/42, C12P19/04, C12N9/02, C12R1/645, C12P19/14, D21C5/00. Enzymatic delignification of lignocellulosic material // Olsen W.L., Gallagher H.P., Burris A.K., Bhattacharjee Sh.S., Slocomb J.P., Dewitt D.M.; Proprietor(s): - Olsen W.L., Gallagher H.P., Burris A.K., Bhattacharjee Sh.S., Slocomb J.P., Dewitt D.M.; - Application № 2019411, 29.01.1990.; - Date publicatio№ 22.12.1990.