Assignee
No assignee recorded.
Inventors
- Leendert Hendrik De Graaff (15 patents)
- Noel Nicolaas Maria Elisabeth Van Peij (9 patents)
- Henriëtta Catharina Van Den Broeck (4 patents)
- Jacob Visser (35 patents)
US Patent 6300112 · Granted Oct 9, 2001
No assignee recorded.