Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4980924 | HF radio communication systems with frequency management | Robert J. Goodwin, Ernest T. Clarke, David Williams | 1990-12-25 |
| 4939731 | Data transmission system with automatic repeat request | Jonathan Hopkinson | 1990-07-03 |