Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873540 | Image recording method | Kimura Fumio | 1989-10-10 |
| 4865936 | Electrophotographic reversal development method using magnetic field and specified development gap | Toshio Kumakura | 1989-09-12 |