Filtration of petroleum tars,申请号US19280267793-传众专利搜索

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发明名称	Filtration of petroleum tars
摘要
申请公布号	US1830962(A)	申请公布日期	1931.11.10
申请号	US19280267793	申请日期	1928.04.05
申请人	STANDARD OIL COMPANY	发明人	READ CARLYLE D.;HOLCOMB ROGER L.
分类号	C10G31/09	主分类号	C10G31/09
代理机构		代理人
主权项
地址

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