Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4494198 | Gun fire control systems | John H. Stewart, Ralph H. Bagnall-Wild | 1985-01-15 |
| 4418361 | Tracking link | Ralph H. Bagnall-Wild, John H. Stewart, David S. Ritchie | 1983-11-29 |