Improvements in distributing valves and valve gear for rock drills,申请号GB19370008847-传众专利搜索

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发明名称	Improvements in distributing valves and valve gear for rock drills
摘要
申请公布号	GB468132(A)	申请公布日期	1937.06.29
申请号	GB19370008847	申请日期	1937.03.25
申请人	INGERSOLL-RAND COMPANY	发明人
分类号	B25D9/20	主分类号	B25D9/20
代理机构		代理人
主权项
地址

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