Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9684793 | Entitlement security and control | David Schlesinger, Thiru Thangarathinam | 2017-06-20 |
| 9245094 | Entitlement security and control | David Schlesinger, Thiru Thangarathinam | 2016-01-26 |
| 8386388 | Entitlement security and control | David Schlesinger, Thiru Thangarathinam | 2013-02-26 |
| 7403925 | Entitlement security and control | David Schlesinger, Thiru Thangarathinam | 2008-07-22 |
| 6398001 | Coin validator | Derek Hutchinson | 2002-06-04 |
| 5609234 | Coin validator | Robert Sydney Walker | 1997-03-11 |
| 5386902 | Coin routing gate | Richard Bointon | 1995-02-07 |
| 5337877 | Coin validators | Richard Douglas Allan | 1994-08-16 |
| 5323891 | Coin testing apparatus | — | 1994-06-28 |
| 5213190 | Method and apparatus for testing coins | David Michael Furneaux, John Bailey, Alan Ralph, Michael Chittleborough, Cary Sagady | 1993-05-25 |
| 5207307 | Coin testing apparatus | — | 1993-05-04 |