Assignee
Inventors
- Franz-Josef Gierse (5 patents)
- Manfred Pabst (21 patents)
- Heinz Hermanns (2 patents)
- Karl Ippers (1 patents)
- Stephan Krenn (1 patents)
- Friedrich Huppe (1 patents)
- Carl H. Opgenoorth (1 patents)
- Conrad Wolters (1 patents)
US Patent 4858843 · Granted Aug 22, 1989