Vertically and laterally expansible continuous mining machine,申请号US19490114556-传众专利搜索

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发明名称	Vertically and laterally expansible continuous mining machine
摘要
申请公布号	US2878001(A)	申请公布日期	1959.03.17
申请号	US19490114556	申请日期	1949.09.08
申请人	THE COLMOL COMPANY	发明人	SNYDER CLIFFORD H.;FUNK HARRY CALVIN
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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