A process for purifying pyromellitic dianhydride,申请号GB19660004988-传众专利搜索

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发明名称	A process for purifying pyromellitic dianhydride
摘要
申请公布号	GB1132784(A)	申请公布日期	1968.11.06
申请号	GB19660004988	申请日期	1966.02.04
申请人	GELSENBERG BENZIN AKTIENGESELLSCHAFT	发明人
分类号	C07C51/48;C07C51/573	主分类号	C07C51/48
代理机构		代理人
主权项
地址

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