Treatment of paper pulp,申请号US19330664286-传众专利搜索

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发明名称	Treatment of paper pulp
摘要
申请公布号	US1998758(A)	申请公布日期	1935.04.23
申请号	US19330664286	申请日期	1933.04.03
申请人	E. I. DU PONT DE NEMOURS & COMPANY	发明人	HOLT HAROLD S.;SCHWARTZ GEORGE L.
分类号	D21H17/28	主分类号	D21H17/28
代理机构		代理人
主权项
地址

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