Assignee
Inventors
- Paul Dietrich (13 patents)
- Martinus Quirinus Joseph Marie van Grinsven (2 patents)
- Johannes Jacobus Ludgerus Gielen (10 patents)
- Johannes Maria De Haas (4 patents)
- Roeland Van Driel (1 patents)
US Patent 6040185 · Granted Mar 21, 2000