Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D258899 | Toy piano | Yoshio Hayama, Sozen Uozumi | 1981-04-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D258899 | Toy piano | Yoshio Hayama, Sozen Uozumi | 1981-04-14 |