Assignee
Inventors
- Immo Boie (15 patents)
- Manfred Peters (28 patents)
- Wolfgang Himmelmann (25 patents)
- Thomas Kaluschke (6 patents)
- Gunther Schenk (16 patents)
- Kaspar Wingender (11 patents)
- Karl Frank (9 patents)
US Patent 4847179 · Granted Jul 11, 1989