Separation of materials,申请号US19310531327-传众专利搜索

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发明名称	Separation of materials
摘要
申请公布号	US1869797(A)	申请公布日期	1932.08.02
申请号	US19310531327	申请日期	1931.04.20
申请人	CLEAVER JOHN M	发明人	CLEAVER JOHN M.
分类号	B04B5/12	主分类号	B04B5/12
代理机构		代理人
主权项
地址

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