Assignee
Inventors
- Juergen Frankel (1 patents)
- Antoon Mattelin (6 patents)
- Pol Pecceu (1 patents)
- Ferdinand Quella (20 patents)
- Hans-Fr. Schmidt (8 patents)
- Luc Boone (5 patents)
- Sybille Von Tomkewitsch (3 patents)
- Unknown
US Patent 4853252 · Granted Aug 1, 1989