Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10253526 | Dual function lock cylinder assembly operable by different keys | Douglas E. Trent, James Bench, Mark Benzie | 2019-04-09 |
| 8973417 | Electronically-controlled removable core lock | James Bench, Doug Trent, David E. Smith | 2015-03-10 |
| 7099474 | Key and lock device | Inge Lidén, Rolf Norberg, Björn Magnusson, Johan Warnström, Reijo Hakkarainen +13 more | 2006-08-29 |
| 6384711 | Electronic lock in cylinder of standard lock | Barton B. Cregger, Stanley D. Kingma, Matthew O. Schroeder | 2002-05-07 |
| 6082153 | Anti-tampering device for use with spring-loaded electronically moved pin locking mechanisms in electronic locks and the like | Matthew O. Schroeder, Barton B. Cregger | 2000-07-04 |