| 发明名称 |
Oil-well cleaner |
| 摘要 |
|
| 申请公布号 |
US1802525(A) |
申请公布日期 |
1931.04.28 |
| 申请号 |
US19280258823 |
申请日期 |
1928.03.03 |
| 申请人 |
EDWIN P. INGLE |
发明人 |
NEWLIN GEORGE E. |
| 分类号 |
E21B37/08 |
主分类号 |
E21B37/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
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