Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12037144 | Space railway | Kenneth Wayne Douglas, Donald Arthur McGregor, Steven C. Griggs | 2024-07-16 |
| 7226058 | Sled for transporting a power auger vertically across ice | — | 2007-06-05 |
| 4212168 | Power producing dry-type cooling system | Elmer W. Rothrock, James B. Maher | 1980-07-15 |