Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D268670 | Audio-visual sheet player | Masao Iwaoka, Fumio Kobayashi | 1983-04-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D268670 | Audio-visual sheet player | Masao Iwaoka, Fumio Kobayashi | 1983-04-19 |