Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4936336 | Tamperproof construction for hydrant actuating nut | Durham S. McCauley, John W. Erwin | 1990-06-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4936336 | Tamperproof construction for hydrant actuating nut | Durham S. McCauley, John W. Erwin | 1990-06-26 |