Continuous mining apparatus of the chain type for longwall mining,申请号US19520312876-传众专利搜索

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发明名称	Continuous mining apparatus of the chain type for longwall mining
摘要
申请公布号	US2939692(A)	申请公布日期	1960.06.07
申请号	US19520312876	申请日期	1952.10.03
申请人	JOY MANUFACTURING COMPANY	发明人	RUSSELL JOHN A.;BOUILLE JOSEPH R.
分类号	E02F5/18;E21C27/26	主分类号	E02F5/18
代理机构		代理人
主权项
地址

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