Assignee
No assignee recorded.
Inventors
- Alexander van der Lely (19 patents)
- Karel Van Den Berg (165 patents)
- Renatus Ignatius Josephus Fransen (17 patents)
- Eduard Lodewijk Meijer (5 patents)
- Adrianus Maria Seerden (2 patents)
US Patent 6938576 · Granted Sep 6, 2005
No assignee recorded.