Assignee
Inventors
- Peter Engler (2 patents)
- Otto Nagel (3 patents)
- Leo Unterstenhofer, deceased (1 patents)
- Hans Frielingsdorf (2 patents)
- Heinz Berbner (15 patents)
- Heinz Mueller-Tamm (2 patents)
- Dieter Stoehr (2 patents)
US Patent 4210615 · Granted Jul 1, 1980