Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8844141 | Rotary shavers, with improved drive and support structure for the shaving heads | Bart Johannes Massee, Paul Anton Josef Ackermans, Wilko Westerhof, Albert Jan Aitink, Ype Brada | 2014-09-30 |
| 5687481 | Shaving apparatus with electrically adjustable cutting unit | Jan de Boer, Jacobus N. Dekker, Andries T. Reeder, Pieter De Pooter | 1997-11-18 |
| 5671535 | Shaving apparatus with controllable motor speed | Jan Tiesinga, Jacobus N. Dekker, Ate K. Damstra | 1997-09-30 |
| 5158262 | Device for interrupting a material flow | Evert M. H. Kamerbeek, Poul K. Larsen, Johannes J. van der Leek, Wilhelmus C. P. M. Meerman, Nicolaas H. J. M. Van Stiphout | 1992-10-27 |
| 4685012 | Magnetic head with anisotropy in plane of core ports | Hendrik J. De Wit, Marcel Brouha, Ulrich E. Enz, Kornelis Jager, Gijsbertus W. Turk | 1987-08-04 |