Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849586 | Slip ring having a rotatable insulation cover | Yuichi Ida, Hironori Kato | 1989-07-18 |
| 4824396 | Electrical connection apparatus | Kunihiko Sasaki, Tsumoru Oka, Takasi Ohya, Mituaki Shinraku, Akihiro Konno +1 more | 1989-04-25 |