Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D395595 | Bolt keeper | Ralph Carroll | 1998-06-30 |
| 5174457 | Coupler unit wear pad assembly for railroad equipment | Ralph Carroll | 1992-12-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D395595 | Bolt keeper | Ralph Carroll | 1998-06-30 |
| 5174457 | Coupler unit wear pad assembly for railroad equipment | Ralph Carroll | 1992-12-29 |