Assignee
Inventors
- Jacobus J. M. Ruigrok (31 patents)
- Pieter Jan Van Der Zaag (49 patents)
- Wiepke Folkerts (5 patents)
- Lambertus Postma (14 patents)
- Ronald M. Wolf (12 patents)
- Johannes F. M. Cillessen (7 patents)
US Patent 6238731 · Granted May 29, 2001