Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7239244 | System and method for monitoring a portable article | Roger J. Leyden | 2007-07-03 |
| 7187283 | Security system for a portable article | Roger J. Leyden, Bjarne Fredericksen | 2007-03-06 |
| 6756900 | Voltage selectable alarm sensor | Roger J. Leyden, Peter Passuntino | 2004-06-29 |
| 6087939 | Security system | Roger J. Leyden | 2000-07-11 |
| 5936525 | Sensor for monitoring an article | Roger J. Leyden | 1999-08-10 |
| 5861807 | Security system | Roger J. Leyden | 1999-01-19 |