Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6523382 | Free wheeling lock assembly | Keith D. Zirtzlaff, Alan J. Ritz | 2003-02-25 |
| 6463773 | Electronic latch apparatus and method | — | 2002-10-15 |
| 6109081 | Key and cylinder lock system | Keith D. Zirtzlaff | 2000-08-29 |
| 6101855 | Key and cylinder lock system | Keith D. Zirtzlaff | 2000-08-15 |
| 6058751 | Free-wheeling lock | Keith D. Zirtzlaff | 2000-05-09 |
| 5904002 | Motor vehicle door module | David Emerling, Gerald O. Morrison, Carter Scott Cannon, Kimberly C. Leshan | 1999-05-18 |