Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5761875 | Reinforced concrete pole with attachment mechanism | Wesley J. Oliphant, Douglas Sherman | 1998-06-09 |
| 4490065 | Splice locking device | Ray D. Ullrich, Douglas Sherman | 1984-12-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5761875 | Reinforced concrete pole with attachment mechanism | Wesley J. Oliphant, Douglas Sherman | 1998-06-09 |
| 4490065 | Splice locking device | Ray D. Ullrich, Douglas Sherman | 1984-12-25 |