Assignee
Inventors
- Wilhelm Adam (9 patents)
- Curt A. Wagner (1 patents)
- Renate Konrad (4 patents)
- Friedrich Engelhardt (52 patents)
- Ulrich Riegel (65 patents)
- Georg W. Eckhardt (3 patents)
- Steffen Piesch (17 patents)
US Patent 4378446 · Granted Mar 29, 1983