Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697649 | Articles employing a magnetic security feature | Geraint Davies, Alaric Naiman | 1997-12-16 |
| 5689263 | Antipilferage markers | — | 1997-11-18 |
| 5639126 | Machine readable and visually verifiable security threads and security papers employing same | Geraint Davies, Alaric Naiman | 1997-06-17 |
| 5621316 | Apparatus for measuring the positions of plural movable members each associated with a respective magnetorestrictive element | Peter HYDE | 1997-04-15 |
| 5614824 | Harmonic-based verifier device for a magnetic security thread having linear and non-linear ferromagnetic characteristics | David Ely, Colin D. Ager | 1997-03-25 |