Assignee
Inventors
- Claus Flockenhaus (36 patents)
- Unknown
- Theo Sander (5 patents)
- Erich Hackler (17 patents)
- Blagoje Levkov (9 patents)
- Daniel Grimm (33 patents)
- Hartmut Kainer (23 patents)
- Hermann Stein (24 patents)
US Patent 4828806 · Granted May 9, 1989