Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8714184 | Caged ball and spring valve rotator | — | 2014-05-06 |
| 7997243 | Ball type valve rotator | — | 2011-08-16 |
| 5327861 | Automatic oil additive injector | Ronald J. Rogalla, Arnold J. Chesna, James J. Grinsteiner | 1994-07-12 |
| 4928912 | Pegboard hanger anchor | — | 1990-05-29 |