Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5607261 | Clamshell power installed screw anchor | Robert M. Hoyt, Daniel V. Hamilton | 1997-03-04 |
| 4533994 | Priority circuit for a multiplexer terminal | Roy L. Harrill | 1985-08-06 |
| 4327534 | Method and apparatus for extending the height of utility poles | Henry Mastalski | 1982-05-04 |