Assignee
Inventors
- Karl W. Beumer (1 patents)
- Charles A. Gaston (5 patents)
- Charles H. Locke (2 patents)
- Alfred Mack (8 patents)
- Brian C. O'Neill (5 patents)
- Warren J. Pinckney (1 patents)
- Alan D. Wilson (20 patents)
US Patent 4642438 · Granted Feb 10, 1987