Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4293766 | Rail car identification apparatus | Robert L. Wiseman | 1981-10-06 |
| 4288926 | Longitudinal rail profilometer | Roger K. Steele, David F. Coleman, Ralph A. Gustafson | 1981-09-15 |