Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658134 | Compressor with suction valve in piston | James J. Gagnon, Paul Howison Bergthold | 1997-08-19 |
| 4445467 | Two-cycle stratified charge gas engine | Lewis E. Allsopp | 1984-05-01 |