Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
CLASS NOTES | ||
245 | DF | MATERIAL TREATED BY ELECTROMAGNETIC ENERGY {8} |
279 | DF | MATERIAL TREATED BY ACOUSTIC ENERGY |
280 | DF | FEATHER TREATING {1} |
282 | DF | PROCESS {24} |
523 | DF | APPARATUS {40} |
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DIGEST | ||
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DIG 1 | DF | Absorbents and adsorbents |