Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907305 | Bubbling bathtub system | Harue Kawagoe, Naoki Kumon, Shinya Hirota, Hidehiko Kishie, Tsutomu Amaki +1 more | 1990-03-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907305 | Bubbling bathtub system | Harue Kawagoe, Naoki Kumon, Shinya Hirota, Hidehiko Kishie, Tsutomu Amaki +1 more | 1990-03-13 |