Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9457821 | Railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications | Francois P. Pretorius, David L. Hill, Lawrence Lowe | 2016-10-04 |
| 8989926 | Railroad signaling and communication system using a fail-safe voltage sensor to verify trackside conditions in safety-critical railroad applications | Francois P. Pretorius, David L. Hill, Lawrence Lowe | 2015-03-24 |