Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313671 | Method and apparatus for controlling image density in an electrophotographic copying machine | — | 1982-02-02 |
| 4314242 | Apparatus for detecting a residual quantity of toner | Mitsuo Akiyama, Isao Ikemoto | 1982-02-02 |