Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6585211 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Charles H. Hodges | 2003-07-01 |
| 6478525 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Charles H. Hodges | 2002-11-12 |
| 6371714 | Vehicle restraint and method for modifying the same | Douglas H. Massey | 2002-04-16 |
| 6250432 | Wheel chocking device and method for using the same | Martin P. Hageman, Thomas J. Palus, Charles H. Hodges | 2001-06-26 |