Assignee
No assignee recorded.
Inventors
- Pavel A. Varenchuk (6 patents)
- Valentin D. Kovalev (6 patents)
- Mikhail Ivanenko (6 patents)
- Nikolai T. Privalov (3 patents)
- Vladimir I. Galinich (2 patents)
- Unknown
- Unknown
US Patent 4994645 · Granted Feb 19, 1991
No assignee recorded.