Placer mining machine,申请号US19460656937-传众专利搜索

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发明名称	Placer mining machine
摘要
申请公布号	US2476231(A)	申请公布日期	1949.07.12
申请号	US19460656937	申请日期	1946.03.25
申请人	WHITE JAMES W	发明人	WHITE JAMES W.
分类号	B03B5/02	主分类号	B03B5/02
代理机构		代理人
主权项
地址

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