Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8539883 | Method and apparatus for regulating the register in a printing press | Klaus Reckefuss, Gerhard Lohmeyer | 2013-09-24 |
| 4784492 | Device for determining surface proportion of a printed pattern for printing machines | Helmut Weigend, Gudrun Dietrich | 1988-11-15 |
| 4712918 | Method for measuring ink density | Helmut Weigend, Peter Reinhardt | 1987-12-15 |
| 4690564 | Device for measuring ink density on printed surfaces | Helmut Weigend, Peter Reinhardt | 1987-09-01 |