Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5987099 | Low-power wireless system for telephone services | Keith Daniel O'Neill, Jin Kue Wong, Shoji Matsushita, David Charles Ploeg, Christian Szpilfogel +3 more | 1999-11-16 |
| 5136585 | Digital key telephone system | Nadir Nizamuddin, Alan Stanley John Chapman, John W. Williams | 1992-08-04 |
| 4893310 | Digital key telephone system | David Joseph Robertson, Ronald J. Maginley, Alan Stanley John Chapman, Terence Neil Thomas, Nadir Nizamuddin +2 more | 1990-01-09 |