Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825980 | Railroad brake slack adjusters | — | 1989-05-02 |
| 4801288 | Railroad hand brake chain link stripper | Richard L. Cotterell | 1989-01-31 |
| 4796731 | Compression type truck/trailer brake slack adjuster | — | 1989-01-10 |