Assignee
Inventors
- Helmut Denz (93 patents)
- Peter Etzold (2 patents)
- Wolfgang Groschel (1 patents)
- Gunther Kaiser (10 patents)
- Heinz Kraemer (1 patents)
- Werner Nitschke (69 patents)
- Martin Zechnall (11 patents)
US Patent 4623974 · Granted Nov 18, 1986