| 发明名称 |
METHOD FOR REMOVING A CONTAMINANT FROM A SURFACE FORMATION |
| 摘要 |
Contaminants are removed from a surface formation by the formation with a solvent in which the contaminant is soluble and then vacuuming the solvent with the contaminants dissolved therein from the formation.
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| 申请公布号 |
CA2147958(A1) |
申请公布日期 |
1995.11.03 |
| 申请号 |
CA19952147958 |
申请日期 |
1995.04.26 |
| 申请人 |
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发明人 |
JAN, RAYMOND J. |
| 分类号 |
B09C1/02;E01H1/00;(IPC1-7):B08B3/14 |
主分类号 |
B09C1/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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