PURIFICATION OF PYROMELLITIC DIANHYDRIDE,申请号USD3592827-传众专利搜索

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发明名称	PURIFICATION OF PYROMELLITIC DIANHYDRIDE
摘要
申请公布号	US3592827(A)	申请公布日期	1971.07.13
申请号	USD3592827	申请日期	1968.10.28
申请人	PRINCETON CHEMICAL RESEARCH INC.	发明人	RICHARD I. BERGMAN
分类号	C07C51/573;(IPC1-7):C07C63/32	主分类号	C07C51/573
代理机构		代理人
主权项
地址

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