Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841360 | Apparatus and method for the reproduction of colored originals with gray balance and/or contrast adjustment | — | 1989-06-20 |
| 4831436 | Method of and apparatus for printing a color image using dichroic filters and a phosphor which strongly emits red light and weakly emits green and blue light | Eduard Wagensonner | 1989-05-16 |
| 4812903 | Method of electronically improving the sharpness and contrast of a colored image for copying | Eduard Wagensonner, Wolfgang Ruf, Hermann Fuchsberger | 1989-03-14 |