Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7802662 | Slack adjuster for railway vehicle brake rigging | Howard Sommerfeld | 2010-09-28 |
| 7093694 | Release hold mechanism with gravity weighted indicator flag | Howard Sommerfeld, Scott Natschke, Wajih Kanjo | 2006-08-22 |
| 5794536 | End design for a railway type freight car | David W. Daugherty, Jr. | 1998-08-18 |