US Patent Class 196
MINERAL OILS: APPARATUS-- Main Headings
 Electronic File Wrappers |  Electronic Patent Documents |  Paper Patent Documents | Current as of: June, 1999
|  and Services |
| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| CLASS NOTES | ||
| 14.5 | DF | DEWAXING |
| 14.52 | DF | SOLVENT EXTRACTION |
| 46 | DF | REFINING {1} |
| 98 | DF | COMBINED VAPORIZING AND CONDENSING {3} |
| 104 | DF | VAPORIZING {22} |
| 138 | DF | CONDENSING {3} |
| 155 | DF | MISCELLANEOUS |