Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290845 | Combined word processor-printer | Takahisa Yubisui, Hiroshi Sakaguchi, Katsuhiro Iida, Tadahiko Saimen | 1987-07-14 |
| D279109 | Calculator | Takahisa Yubisui, Hiroshi Sakaguchi, Keiji Sakata | 1985-06-04 |