Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5399119 | Air valve device having flush closing nozzle | Brian Birk | 1995-03-21 |
| 4831067 | Process for the manufacture of frictional elements and frictional elements produced thereby | Peter H. R. B. Lemon | 1989-05-16 |