Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358769 | Loop antenna apparatus with variable directivity | Masahiro Tada, Hirokazu Ichikawa, Mitsuo Fukushima, Koya Nakamichi, Yoshio Ishigaki | 1982-11-09 |
| 4338606 | Antenna system with variable directivity | Masahiro Tada, Yoshio Ishigaki, Koya Nakamichi | 1982-07-06 |