Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814678 | Speed control apparatus for motor | Tsutomu Omae, Toshihiko Matsuda, Masahiro Tobise | 1989-03-21 |
| 4808903 | Vector control system for induction motors | Takayuki Matsui, Toshiaki Okuyama, Junichi Takahashi | 1989-02-28 |