Silencer for rock drills,申请号US19400335516-传众专利搜索

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发明名称	Silencer for rock drills
摘要
申请公布号	US2244060(A)	申请公布日期	1941.06.03
申请号	US19400335516	申请日期	1940.05.16
申请人	INGERSOLL-RAND COMPANY	发明人	FUEHRER GEORGE H.
分类号	B25D17/12	主分类号	B25D17/12
代理机构		代理人
主权项
地址

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