Assignee
Inventors
- Anthony L. Gelardi (74 patents)
- Paul J. Gelardi (45 patents)
- Stephen G. Swinburne (8 patents)
- Michael Janiszewski (2 patents)
- Robert B. MacLeod, Jr. (29 patents)
- James Philippe (8 patents)
- David Philippe (8 patents)
US Patent 4275943 · Granted Jun 30, 1981