Auger mining machine,申请号US19600037490-传众专利搜索

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发明名称	Auger mining machine
摘要
申请公布号	US3091439(A)	申请公布日期	1963.05.28
申请号	US19600037490	申请日期	1960.06.20
申请人	THE SALEM TOOL COMPANY	发明人	ADAMS GEORGE L.;GOVIN CHARLES T.
分类号	E21C27/22	主分类号	E21C27/22
代理机构		代理人
主权项
地址

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