Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7140213 | Steering column lock apparatus and method | Michael G. Feucht, David C. Janssen | 2006-11-28 |
| 6427504 | Key assembly for vehicle ignition locks | David C. Janssen, Ronald J. McGuire | 2002-08-06 |