Process of decolorizing heavy spar,申请号US19310575463-传众专利搜索

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发明名称	Process of decolorizing heavy spar
摘要
申请公布号	US1941626(A)	申请公布日期	1934.01.02
申请号	US19310575463	申请日期	1931.11.16
申请人	AMERICAN LURGI CORPORATION	发明人	SCHIECHEL MAXIMILIAN
分类号	C01F11/46;C09C1/02	主分类号	C01F11/46
代理机构		代理人
主权项
地址

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