Assignee
Inventors
- Wilson P. Rayfield (8 patents)
- Norman H. Preston (1 patents)
- Ronald Worden Ferguson (1 patents)
- Frederick H. Dear (2 patents)
- Henry M. Korytkowski (3 patents)
- Frank L. Muster (4 patents)
- Ward L. Karns (4 patents)
US Patent 4197797 · Granted Apr 15, 1980