Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8849572 | Apparatus for determining the concentration of a conductive fluid present in a fluid filled borehole | Guy Harvey Mason, James Andrew Gulliver, Derek Hayes, Kenneth Tomkins, Andrew John Stevens | 2014-09-30 |
| 6705448 | Method and apparatus for validating currency | — | 2004-03-16 |
| 5971128 | Apparatus for validating items of value, and method of calibrating such apparatus | Gregory John Billington | 1999-10-26 |
| 5715926 | Money validation | David Michael Furneaux, Stephen John Dillon | 1998-02-10 |