Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6902691 | Process for operating a calendar | Rolf van Haag, Robert Wolf | 2005-06-07 |
| 6892631 | Process for operating a calender | Robert Wolf | 2005-05-17 |
| 6857356 | Calender and process for operating a calendar | Rolf van Haag, Robert Wolf | 2005-02-22 |