Mounting for rock drills,申请号US19460642291-传众专利搜索

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发明名称	Mounting for rock drills
摘要
申请公布号	US2456745(A)	申请公布日期	1948.12.21
申请号	US19460642291	申请日期	1946.01.19
申请人	INGERSOLL-RAND COMPANY	发明人	SLATER FRED M.
分类号	E21B7/02;E21B19/081	主分类号	E21B7/02
代理机构		代理人
主权项
地址

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