Assignee
Inventors
- Alexander Jan Carel De Vries (14 patents)
- Armin Olschewski (133 patents)
- Hendrikus Jan Kapaan (44 patents)
- Johannes Albertus Van Winden (11 patents)
- Clair Druet (13 patents)
- Roland Haas (46 patents)
US Patent 6325180 · Granted Dec 4, 2001