Assignee
Inventors
- Johannus Wilhelmus Weekamp (35 patents)
- Jacobus Bernardus Giesbers (13 patents)
- Bartholomeus Peter Hendricus Van Nunen (1 patents)
- Adrainus Cornelius Van Kasteren (1 patents)
- Menno Willem Jose Prins (65 patents)
US Patent 6289081 · Granted Sep 11, 2001