Cutting and dislodging head for a continuous mining machine,申请号US19550504187-传众专利搜索

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发明名称	Cutting and dislodging head for a continuous mining machine
摘要
申请公布号	US2754099(A)	申请公布日期	1956.07.10
申请号	US19550504187	申请日期	1955.04.27
申请人	GOODMAN MANUFACTURING COMPANY	发明人	TRACY BENJAMIN F.
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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