Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638751 | Integrated doctor blade and back-up blade | Peter Daetwyler | 1997-06-17 |
| 5594162 | Valve stem gas leak detector | Patrick Dolan, James T. Dolan, Margaret R. Dolan | 1997-01-14 |