Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30198 | Cylinder lock | Roy N. Oliver, Paul Anthony Powell, Roy C. Spain | 1980-01-29 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE30198 | Cylinder lock | Roy N. Oliver, Paul Anthony Powell, Roy C. Spain | 1980-01-29 |