Assignee
Inventors
- Robert D. Hall (20 patents)
- Franciscus Andries Krens (1 patents)
- Henricus Adrianus Verhoeven (3 patents)
- Maria Colijn-Hooymans (1 patents)
- James Martin Dunwell (3 patents)
- Guy Weyens (8 patents)
US Patent 5969215 · Granted Oct 19, 1999