Assignee
Inventors
- Horst Kretschmer (23 patents)
- Guenter Tietze (1 patents)
- Juergen Noack (2 patents)
- Hans-Joachim Schweigel (3 patents)
- Manfred Schingnitz (49 patents)
- Klaus Werner (6 patents)
- Bernd Kirsch (1 patents)
US Patent 4521139 · Granted Jun 4, 1985