Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699765 | Cylinder head for a uniflow-scavenged two-stroke internal-combustion engine | Frank Duvinage, Michael Kramer, Nils Rippert, Christian Enderle | 1997-12-23 |
| 5611302 | Two cycle internal combustion engine with unidirectional flow scavenging | Frank Duvinage | 1997-03-18 |