Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6045692 | Oil filter to introduce anti-wear additives into engine lubricating system | Gerard W. Bilski, Robert Voigt | 2000-04-04 |
| 5725031 | Method for introducing PTFE into a spin-on oil filter | Gerard W. Bilski, Robert Voigt | 1998-03-10 |