Assignee
Inventors
- Jens-Holger Hellmann (4 patents)
- Richard Holscher (1 patents)
- Hermann J. Janssen (5 patents)
- Alfred Kleemann (1 patents)
- Karl-Heinz Rupp (5 patents)
- Joachim Schwarz (13 patents)
- Gunter Varges (5 patents)
- Heinrich Waas (2 patents)
US Patent 4942837 · Granted Jul 24, 1990