Assignee
Inventors
- Horst Boshagen (38 patents)
- Ulrich Rosentreter (48 patents)
- Folker Lieb (73 patents)
- Hermann Oediger (19 patents)
- Friedel Seuter (33 patents)
- Elisabeth Perzborn (101 patents)
- Volker-Bernd Fiedler (28 patents)
US Patent 4988820 · Granted Jan 29, 1991