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经营范围
发明名称
EARTH-DRILLING TOOL
摘要
申请公布号
SU746083(A1)
申请公布日期
1980.07.07
申请号
SU19762418631
申请日期
1976.11.09
申请人
YUGOV EVGENIJ V,SU;VORONOVA MARGARITA V,SU;MIKHAJLOV GENNADIJ V,SU
发明人
YUGOV EVGENIJ V,SU;VORONOVA MARGARITA V,SU;MIKHAJLOV GENNADIJ V,SU
分类号
E21B25/00;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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