Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4645085 | Method of enhancing rigidity in a railway car coupler knuckle | Richard M. Hanula | 1987-02-24 |
| 4350256 | Rotary coupler with a specially configured pinhole | Richard M. Hanula | 1982-09-21 |