Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D545283 | Videophone | — | 2007-06-26 |
| 7173647 | Videophone | Frederik Karel Kappetijn, Pieter Martinus Den Toonder | 2007-02-06 |
| D491153 | Videophone | Frederik Karel Kappetijn, Pieter den Toonder | 2004-06-08 |