Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330406 | Semipermeable membrane and process of making same | Takezo Sano, Takatoshi Shimomura | 1982-05-18 |
| 4325646 | Inkribbon cartridge | — | 1982-04-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330406 | Semipermeable membrane and process of making same | Takezo Sano, Takatoshi Shimomura | 1982-05-18 |
| 4325646 | Inkribbon cartridge | — | 1982-04-20 |