Assignee
Inventors
- Daniel Chambaere (5 patents)
- Wilfred Coppens (1 patents)
- Hugo Lievens (18 patents)
- Roger De Gryse (3 patents)
- Robert Hoogewijs (3 patents)
- Joost Vennik (3 patents)
- Lucien Fiermans (2 patents)
US Patent 4978586 · Granted Dec 18, 1990