Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7337639 | Method of making a key for a pin tumbler lock | — | 2008-03-04 |
| 7225651 | Pick-resistant wafer tumbler lock with sidebars | James L. Welch | 2007-06-05 |
| 7040126 | Discriminating mechanism for a pin tumbler lock | — | 2006-05-09 |
| 6978647 | Pick-resistant wafer tumbler lock with sidebars | James L. Welch | 2005-12-27 |