Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815077 | Test system for electronic devices with radio frequency signature extraction means | — | 1989-03-21 |
| 4812037 | Method and apparatus for optically detecting circuit malfunctions | Ernest P. Riedel | 1989-03-14 |