Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933637 | Apparatus for detecting a magnetic field having an excitation current source unit, a detection unit and a current control source unit | Toshikatsu Sonoda, Toshiyuki Irisa, Shigeo Takata | 1990-06-12 |