Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666672 | Toilet attachment with easily detachable seat | Ayse Birsel, Noriko Hiraga, Kenichi Nagato, Koichi Watanabe, Kuniaki Shinohara | 1997-09-16 |
| 5593360 | Planetary gear system | Hiroki Ishida, Hiroshi Horie | 1997-01-14 |