Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696880 | Communication system user authentication method | David T. Gustafson, Robert Frith | 1997-12-09 |
RS
Richard G. Shepherd
Overall (1997): #88,004 of 185,788Top 50%
1
Patents 1997