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发明名称
EXPANSION DEVICE OF DRILLING TOOL
摘要
申请公布号
SU829788(A1)
申请公布日期
1981.05.15
申请号
SU19792797065
申请日期
1979.07.16
申请人
V P IZYSKATELSKIJ NII "GIDROPROEKT" IM. S.YA.ZHUKA
发明人
SHEJNBLYUM VLADIMIR M,SU;OKUNEV MIKHAIL SH,SU;KRAVTSOV ALEKSANDR A,SU;SUKHENKO SERGEJ V,SU
分类号
(IPC1-7):E02D17/14
主分类号
(IPC1-7):E02D17/14
代理机构
代理人
主权项
地址
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