Boring type continuous mining machine with contour cutters,申请号US19660546974-传众专利搜索

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发明名称	Boring type continuous mining machine with contour cutters
摘要
申请公布号	US3407006(A)	申请公布日期	1968.10.22
申请号	US19660546974	申请日期	1966.05.02
申请人	WESTINGHOUSE AIR BRAKE COMPANY	发明人	BRILL EDWARD F.;SHELLEY HOWARD E.
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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