Assignee
Inventors
- Heinz Gross (36 patents)
- Friedrich-Otto Koch (7 patents)
- Matthias Lang (30 patents)
- Adolf Peeck (4 patents)
- Hans Spliethoff (1 patents)
- Wolfgang Venema (1 patents)
- Jurgen Duisberg (1 patents)
- Robert Scholl (5 patents)
US Patent 4969671 · Granted Nov 13, 1990