Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661291 | Audio proof of delivery system and method | Kevin J. Ahearn, James M. DeArras, Vernon L. Stant, James A. Trautwein | 1997-08-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5661291 | Audio proof of delivery system and method | Kevin J. Ahearn, James M. DeArras, Vernon L. Stant, James A. Trautwein | 1997-08-26 |