Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5257320 | Signature verification system | Harry J. C. Etherington, Timothy J. Stevenson | 1993-10-26 |
| 4707573 | Electrical conductor array | Harry J. C. Etherington, David Carr, Raymond Simpson-Davis | 1987-11-17 |
| 4680801 | Sign verification | Harry J. C. Etherington, Rowland A. G. Dunkley | 1987-07-14 |