Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664368 | Device for collecting sheets | Ferdinand M. H. F. Hooghiemstra, Leonardus Van Ruiten | 1987-05-12 |
| 4637598 | Holder for a stack of sheets | Hendrik E. P. Schiffelers | 1987-01-20 |