Process for producting coal fillers,申请号US19880196219-传众专利搜索

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发明名称	Process for producting coal fillers
摘要
申请公布号	US4849021(A)	申请公布日期	1989.07.18
申请号	US19880196219	申请日期	1988.05.06
申请人	IDEMITSU KOSAN CO., LTD.	发明人	NAKAI, MASAYUKI;UESUGI, KENJI;TOMURA, KATSUMI
分类号	C01B31/02;C09C1/44;C09C1/48;C09C1/56;C09C1/58	主分类号	C01B31/02
代理机构		代理人
主权项
地址

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