Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399379 | Air cooled machine and cooling fan | Stephen W. Marks, Ronald N. Gray | 1983-08-16 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399379 | Air cooled machine and cooling fan | Stephen W. Marks, Ronald N. Gray | 1983-08-16 |