Assignee
No assignee recorded.
Inventors
- Gerhard Steinke (2 patents)
- Peter Fels (3 patents)
- Unknown
- Werner Lorenz (5 patents)
- Unknown
- Frank Steffen (5 patents)
- Walter Reichardt (2 patents)
US Patent 4618987 · Granted Oct 21, 1986
No assignee recorded.