Anchor mechanism for rock drills,申请号US19620213760-传众专利搜索

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发明名称	Anchor mechanism for rock drills
摘要
申请公布号	US3141510(A)	申请公布日期	1964.07.21
申请号	US19620213760	申请日期	1962.07.31
申请人	ALKIRK, INC.	发明人	LAWRENCE JAMES C.
分类号	E21B19/086	主分类号	E21B19/086
代理机构		代理人
主权项
地址

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