Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10189488 | Railway freight car draft gear assembly | — | 2019-01-29 |
| 6681943 | Railcar draft gear assembly and system | Ronald E. Barker, Charles E. Burkhart, John F. Deppen, V. Terrey Hawthorne, Horst T. Kaufhold +3 more | 2004-01-27 |
| 6446820 | Railcar draft gear assembly and system | Ronald E. Barker, Charles E. Burkhart, John F. Deppen, V. Terrey Hawthorne, Horst T. Kaufhold +3 more | 2002-09-10 |
| 5598937 | Slackless drawbar assembly | — | 1997-02-04 |