Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943958 | ISDN interface trunk circuit | John Stewart Young, William D. Blewitt | 1990-07-24 |
| 4797654 | Data format conversion circuit | John Stewart Young, William D. Blewitt | 1989-01-10 |