Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866589 | Voltage resonance type switching power source apparatus | Masayoshi Satoo, Norikazu Tokunaga, Hisao Amano, Yasuo Matsuda | 1989-09-12 |
| 4866590 | Supply having a load invariant auxiliary power supply supplied from a main transformer and a current suppressing inductor | Kunio Ishiyama, Shoichi Noguchi | 1989-09-12 |