Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5423142 | Weather-proof, vandal-proof, changeable display sign | Stafford S. Cooper, Philip G. Malone | 1995-06-13 |
| 5309994 | Method and apparatus for installing a well | Stafford S. Cooper, Philip G. Malone | 1994-05-10 |
| 5092245 | Explosive stemming device | Stafford S. Cooper, Philip G. Malone | 1992-03-03 |