Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343268 | Energy conserving exhaust passage for an internal combustion engine | John H. Stang, David A. Ruthmansdorfer | 1982-08-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4343268 | Energy conserving exhaust passage for an internal combustion engine | John H. Stang, David A. Ruthmansdorfer | 1982-08-10 |