Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6735946 | Direct illumination free piston stirling engine solar cavity | William Otting | 2004-05-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6735946 | Direct illumination free piston stirling engine solar cavity | William Otting | 2004-05-18 |