Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8058971 | Access control system | Michael T. Harkins | 2011-11-15 |
| 7880584 | Lockbox key with callback feature | Wayne F. Larson, Michael T. Harkins, Teri Lynne Briskey, Jerry Switzer | 2011-02-01 |