Assignee
Inventors
- Walter Schafer (55 patents)
- Hans Rudolph (49 patents)
- Rolf Dhein (131 patents)
- Hanns P. Muller (146 patents)
- Michael Sonntag (35 patents)
- Christian Wamprecht (83 patents)
- Harald Blum (73 patents)
- Walter Krauss (17 patents)
US Patent 4945137 · Granted Jul 31, 1990