Assignee
Inventors
- August Lehner (45 patents)
- Albert Kohl (37 patents)
- Michael Bobrich (17 patents)
- Hermann Roller (21 patents)
- Peter Richter (43 patents)
- Werner Lenz (51 patents)
- Ludwig Kreitner (8 patents)
- Peter Rudolf (86 patents)
US Patent 4895764 · Granted Jan 23, 1990