Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985928 | Signature forgery detection device | Robert Campbell, Kurt E. Schwalbe | 1991-01-15 |
| 4907080 | Video signature comparator and method | Robert Campbell | 1990-03-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4985928 | Signature forgery detection device | Robert Campbell, Kurt E. Schwalbe | 1991-01-15 |
| 4907080 | Video signature comparator and method | Robert Campbell | 1990-03-06 |