Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4786255 | Group education system | Tamihei Hiramatsu, Taiji Kitami, Akira Masuda, Yoshiko Matsushita, Ryuji Suzuki +2 more | 1988-11-22 |
| 4310317 | Educational apparatus with automatic terminal identification | Shigenori Nomura | 1982-01-12 |