Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5683619 | De-icing composition and method for making same | Norbert Steinhauser | 1997-11-04 |
| 5651915 | De-icing composition and method for making same | Norbert Steinhauser | 1997-07-29 |
| 5599475 | De-icing composition and method for making same | Norbert Steinhauser | 1997-02-04 |