Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867279 | Low-profile railway car retarder | Charles T. Link, Harold L. Shumaker | 1989-09-19 |
| 4696223 | Pneumatic pressure actuator | Charles T. Link, Harold L. Shumaker | 1987-09-29 |