Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D491645 | Toilet trainer | Fumie Shibata, Yuuki Shibata, Keita Tanaka, Masatoshi Doi | 2004-06-15 |
| D491646 | Potty | Fumie Shibata, Yuuki Shibata, Keita Tanaka, Masatoshi Doi | 2004-06-15 |