Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4657621 | Low particulate vacuum chamber input/output valve | Randall E. Johnson, Lowell E. Simmons | 1987-04-14 |
| 4300956 | Method of preparing a metal substrate for use in a catalytic converter | Gregory J. Rosenberger | 1981-11-17 |