Adjustable arm for a rotary cutting head,申请号US19550525053-传众专利搜索

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发明名称	Adjustable arm for a rotary cutting head
摘要
申请公布号	US2879049(A)	申请公布日期	1959.03.24
申请号	US19550525053	申请日期	1955.07.28
申请人	CONSOLIDATION COAL COMPANY	发明人	POUNDSTONE WILLIAM N.
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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