Tunnel boring machine having flexible belt shaker conveyor,申请号US19540453467-传众专利搜索

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发明名称	Tunnel boring machine having flexible belt shaker conveyor
摘要
申请公布号	US2942863(A)	申请公布日期	1960.06.28
申请号	US19540453467	申请日期	1954.09.01
申请人	JOY MANUFACTURING COMPANY	发明人	JOY JOSEPH F.
分类号	E21D3/00;E21D9/10;E21D9/12	主分类号	E21D3/00
代理机构		代理人
主权项
地址

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