Combination air and water valve for rock drills,申请号GB19540009113-传众专利搜索

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发明名称	Combination air and water valve for rock drills
摘要
申请公布号	GB748056(A)	申请公布日期	1956.04.18
申请号	GB19540009113	申请日期	1954.03.29
申请人	CHICAGO PNEUMATIC TOOL COMPANY	发明人
分类号	B25D17/16;E21B21/01	主分类号	B25D17/16
代理机构		代理人
主权项
地址

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