Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696880 | Communication system user authentication method | Richard G. Shepherd, Robert Frith | 1997-12-09 |
DG
David T. Gustafson
Overall (1997): #163,475 of 185,788Top 90%
1
Patents 1997