Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8302535 | Train yard classification system | — | 2012-11-06 |
| 7097383 | Substrate removal apparatus | William Lingenfelter | 2006-08-29 |
| 6953303 | Substrate removal apparatus | William Lingenfelter | 2005-10-11 |