发明名称 |
Apparatus for mud bucket |
摘要 |
|
申请公布号 |
GB9509627(D0) |
申请公布日期 |
1995.07.05 |
申请号 |
GB19950009627 |
申请日期 |
1995.05.12 |
申请人 |
SUB-DRILL SUPPLY LIMITED |
发明人 |
|
分类号 |
E21B21/01 |
主分类号 |
E21B21/01 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|
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