Assignee
Inventors
- Franz Hillenkamp (15 patents)
- Raimund Kaufmann (5 patents)
- Eberhard Unsold (13 patents)
- Rainer Nietsche (1 patents)
- Reiner Wechsung (6 patents)
- Henning Vogt (6 patents)
- Walter Bank (2 patents)
- Lothar Aberle (2 patents)
US Patent 4243887 · Granted Jan 6, 1981