Assignee
Inventors
- Gunther Kessen (3 patents)
- Boy Cornils (42 patents)
- Wilhelm Gick (14 patents)
- Ernst Wiebus (34 patents)
- Joseph Hibbel (2 patents)
- Hanswilhelm Bach (22 patents)
- Wolfgang Zgorzelski (11 patents)
US Patent 4684750 · Granted Aug 4, 1987