Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869427 | Shower system | Ryuichi Kawamoto, Kazuyuki Wakahara, Ikutoshi Nebashi | 1989-09-26 |
| 4833739 | Steam sauna | Ryuici Kawamoto | 1989-05-30 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869427 | Shower system | Ryuichi Kawamoto, Kazuyuki Wakahara, Ikutoshi Nebashi | 1989-09-26 |
| 4833739 | Steam sauna | Ryuici Kawamoto | 1989-05-30 |