Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8651393 | Repair insert for repairing metallic structure | Richard F. Kral, David P. Workman | 2014-02-18 |
| 7520415 | Method of repairing a rail | Richard F. Kral, Matthew Q. Johnson, Mark E. Rovnyak, Daniel Coomer | 2009-04-21 |