Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6126368 | Rotary tool with a cooling apparatus | Gerd Daubinger, Horst Rahmsdorf, Felix Ferlemann, Holger Wirtz | 2000-10-03 |
| 4497311 | Sun tracking solar air heating system | — | 1985-02-05 |
| 4201121 | Method of venting heat from homes | — | 1980-05-06 |