Assignee
Inventors
- Karl Konrath (37 patents)
- Claus Koester (4 patents)
- Wolf-Ruediger Walk (1 patents)
- Karl-Friedrich Ruesseler (4 patents)
- Helmut Tschoeke (6 patents)
- Mohammad-Ali Khosrawi (3 patents)
- Alfons Schoetz (4 patents)
US Patent 5233957 · Granted Aug 10, 1993