Assignee
Inventors
- Robert Nelson Crockett (20 patents)
- Robert Frederic Kern (47 patents)
- Arnold G. Miller (1 patents)
- Richard E. Norris (1 patents)
- Michael W. Pousson, Jr. (2 patents)
- Robert E. Wagner (17 patents)
US Patent 4837680 · Granted Jun 6, 1989