Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6076227 | Electrical surface treatment device with an acoustic surface type detector | Michiel A. A. Schallig, Albert J. Meijer, Peter Sofrides Viet | 2000-06-20 |
| 5798913 | Power-supply and communication | Peter Sofrides Viet, Johannes A.T. Driessen, Paul A. C. Beijer | 1998-08-25 |
| 5671535 | Shaving apparatus with controllable motor speed | Albertus J. C. Van Der Borst, Jacobus N. Dekker, Ate K. Damstra | 1997-09-30 |
| 5568374 | Vacuum cleaner with three-wire power-supply and communication connection between functional units to be coupled | Wieger Lindeboom, Peter Sofrides Viet | 1996-10-22 |