Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4359026 | Internal combustion engine having rods for controlling twist pattern in combustion air supplied to valve chambers | Klaus Henke, Hugo Stock, Paul Tholen | 1982-11-16 |
| 4228655 | Internal combustion engine and a method of operation thereof | Otto Herschmann, Norbert Zernig, Hugo Stock, Paul Tholen | 1980-10-21 |