Assignee
Inventors
- Jesse L. Campbell (4 patents)
- Alan A. Fennema (35 patents)
- Robert Henderson (4 patents)
- William G. Rance, Jr. (3 patents)
- Paul H. Whittington (7 patents)
- William O. Wightman, Jr. (2 patents)
US Patent 4519553 · Granted May 28, 1985