Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5529437 | Guidance system and method for keeping a tunnel boring machine continuously on a plan line | Steven R. Wardwell, Michael L. Shank | 1996-06-25 |
| 4915237 | Comprehensive container inspection system | Roger Chang, Donald Darling, Jaime Periera, Tyce Fitzmorris, Trent Francis +4 more | 1990-04-10 |
| 4750035 | Video container inspection with collimated viewing of plural containers | Roger Chang, Donald Darling, Russell G. Mortensen, Jamie Pereira | 1988-06-07 |