Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4235445 | Sealing system for piston rod of hot gas engine | Sven A. V. Ringqvist | 1980-11-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4235445 | Sealing system for piston rod of hot gas engine | Sven A. V. Ringqvist | 1980-11-25 |