APPARATUS FOR FORMING AN EXPANSION IN A HOLE,申请号SU19742067938-传众专利搜索

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发明名称	APPARATUS FOR FORMING AN EXPANSION IN A HOLE
摘要
申请公布号	SU744074(A1)	申请公布日期	1980.06.30
申请号	SU19742067938	申请日期	1974.10.21
申请人	PROEKTNO-IZYSKATELSKAYA KONTORA "UKRSPETSSTROJPROEKT"	发明人	DAVYDOV GEORGIJ D,SU;BRYUMER VLADLEN M,SU;CHEREPYANYJ VITALIJ M,SU;KOVAL VIKTOR E,SU;GLADAREVSKIJ LEONID M,SU
分类号	E21B7/30;(IPC1-7):E02D17/14	主分类号	E21B7/30
代理机构		代理人
主权项
地址

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