Method of coloring coal,申请号US19350026400-传众专利搜索

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发明名称	Method of coloring coal
摘要
申请公布号	US2129902(A)	申请公布日期	1938.09.13
申请号	US19350026400	申请日期	1935.06.13
申请人	AMERICAN CYANAMID COMPANY	发明人	BARSKY GEORGE;HANSEN WALDEMAR C.
分类号	C10L9/10	主分类号	C10L9/10
代理机构		代理人
主权项
地址

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