Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4466641 | Duct connecting system | Howard J. McElroy | 1984-08-21 |
| 4228672 | Rotary notcher and former | Leo R. Gale | 1980-10-21 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4466641 | Duct connecting system | Howard J. McElroy | 1984-08-21 |
| 4228672 | Rotary notcher and former | Leo R. Gale | 1980-10-21 |