Process for improving rosin,申请号US19300449695-传众专利搜索

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发明名称	Process for improving rosin
摘要
申请公布号	US2017866(A)	申请公布日期	1935.10.22
申请号	US19300449695	申请日期	1930.05.03
申请人	COLUMBIA NAVAL STORES COMPANY OF DELAWARE	发明人	MORTON AVERY A.
分类号	C09F1/00	主分类号	C09F1/00
代理机构		代理人
主权项
地址

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