Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4364041 | Contrast controllable electrochromic display driver circuit | Shigeki Imai | 1982-12-14 |
| 4311953 | Charger using one or more solar batteries | Takehiko Sasaki, Hiroshi Mori | 1982-01-19 |