Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875092 | Image forming apparatus with positioning-mark forming function | Yasuo Abuyama, Akihiko Someya | 1989-10-17 |
| 4816902 | Method for continuously preparing films for use in making printing plates for off set lithography and image-forming apparatus for preparing the films | — | 1989-03-28 |