发明名称 |
ROLLER GAGGER |
摘要 |
|
申请公布号 |
SU1717785(A1) |
申请公布日期 |
1992.03.07 |
申请号 |
SU19894773300 |
申请日期 |
1989.12.25 |
申请人 |
SMIRNOV IGOR V,SU |
发明人 |
SMIRNOV IGOR V,SU |
分类号 |
E21B10/30 |
主分类号 |
E21B10/30 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
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