FEED MECHANISM FOR ROCK DRILL HOSE GUIDE,申请号USD3500941-传众专利搜索

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发明名称	FEED MECHANISM FOR ROCK DRILL HOSE GUIDE
摘要
申请公布号	US3500941(A)	申请公布日期	1970.03.17
申请号	USD3500941	申请日期	1968.12.09
申请人	GARDNER DENVER CO.	发明人	FREDERICK R. RUDMAN
分类号	E21B15/04;(IPC1-7):E21C5/06;E21C11/00	主分类号	E21B15/04
代理机构		代理人
主权项
地址

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