Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5802173 | Radiotelephony system | Nicholas Francis Hamilton-Piercy, Donald Graham Monteith, Roger David Keay, George M. Hart, Meng F. Yee +2 more | 1998-09-01 |
| 4535495 | Back rest cushion | — | 1985-08-20 |