Assignee
Inventors
- Ulrich Rosentreter (48 patents)
- Horst Boshagen (38 patents)
- Folker Lieb (73 patents)
- Hermann Oediger (19 patents)
- Volker-Bernd Fiedler (28 patents)
- Elisabeth Perzborn (101 patents)
- Friedel Seuter (33 patents)
US Patent 4843091 · Granted Jun 27, 1989