Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8807050 | Railcar constant contact side bearing assembly | Paul B. Aspengen, Erik Jensen, Adam J. Merges, Mark W. Stanek, Jeff Ballerini +2 more | 2014-08-19 |
| RE44177 | Railroad car energy absorption apparatus | William P. O'Donnell, Erik Jensen, Donald E. Wilt, Michael S. Dillon | 2013-04-30 |
| 8201504 | Railcar constant contact side bearing assembly | William P. O'Donnell, Erik Jensen, Paul B. Aspengren, Paul A. Perlongo, Mark W. Stanek +1 more | 2012-06-19 |
| 7044061 | Railroad car energy absorption apparatus | William P. O'Donnell, Erik Jensen, Donald E. Wilt, Michael S. Dillon | 2006-05-16 |
| 6862999 | Railroad car energy absorption apparatus | William P. O'Donnell, Erik Jensen, Donald E. Wilt, Michael S. Dillon | 2005-03-08 |
| 6792871 | Railroad car energy absorption apparatus | William P. O'Donnell, Erik Jensen, Donald E. Wilt, Michael S. Dillon | 2004-09-21 |