Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9337898 | Digital intercom network over DC-powered microphone cable | David Albiston, Nigel Gordon | 2016-05-10 |
| 8311085 | Digital intercom network over DC-powered microphone cable | David Albiston, Nigel Gordon | 2012-11-13 |
| 8066002 | Manifold for use in medicament dispenser | Richard Ian Walker | 2011-11-29 |
| 6055306 | Suppression of call answer supervision in a telephone network by an intelligent peripheral | Zygmunt A. Lozinski, Andrew Ritchie | 2000-04-25 |