Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509396 | Apparatus for making holes in thick stacks of paper | Walter Schall, Guido Negro, Hans Albrecht | 1985-04-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509396 | Apparatus for making holes in thick stacks of paper | Walter Schall, Guido Negro, Hans Albrecht | 1985-04-09 |