Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847625 | Wideband, aperture-coupled microstrip antenna | Fred J. Dietrich, Yeongming Hwang, Francis J. Kilburg | 1989-07-11 |
| 4843400 | Aperture coupled circular polarization antenna | Thomas E. Roberts | 1989-06-27 |