Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879563 | Circularly polarized complementary antenna with patch and dipole elements | Akihiro Takahashi | 1989-11-07 |
| 4841545 | Synchronous tracking device for direct spread spectrum receiver | Akihiko Endo, Hiroshi Takeda | 1989-06-20 |