Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6971341 | Piston lubrication for a free piston engine | Peter Hofbauer | 2005-12-06 |
| 6941904 | Air scavenging for an opposed piston opposed cylinder free piston engine | Ing. Peter Hofbauer, Lixin Peng, Adrain Tusinean | 2005-09-13 |