![]() 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 |