Assignee
No assignee recorded.
Inventors
- Robert S. Miller (39 patents)
- Unknown
- Guido Laporta (4 patents)
- Harold Schoenhaus (8 patents)
- William J. Covert (11 patents)
- Ray M. Frey (6 patents)
- Unknown
US Patent 5267924 · Granted Dec 7, 1993
No assignee recorded.