Spring handle attachment for rock drills,申请号US19270207611-传众专利搜索

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发明名称	Spring handle attachment for rock drills
摘要
申请公布号	US1845825(A)	申请公布日期	1932.02.16
申请号	US19270207611	申请日期	1927.07.22
申请人	CHICAGO PNEUMATIC TOOL COMPANY	发明人	BENEDICT WILLIAM H.
分类号	B25D17/04	主分类号	B25D17/04
代理机构		代理人
主权项
地址

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