Production of pitch and apparatus therefor,申请号US19270186354-传众专利搜索

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发明名称	Production of pitch and apparatus therefor
摘要
申请公布号	US1871628(A)	申请公布日期	1932.08.16
申请号	US19270186354	申请日期	1927.04.25
申请人	THE BARRETT COMPANY	发明人	MCCLOSKEY GREGORY EDWARD;WINGERT WILLIAM B.
分类号	C10C1/16	主分类号	C10C1/16
代理机构		代理人
主权项
地址

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