Assignee
Inventors
- Frank Robinson (14 patents)
- James William Zehnder, II (18 patents)
- William C. Kruckemeyer (73 patents)
- Herbert S. Summers (8 patents)
- Jay Michael Shores (7 patents)
- Stephen Carey Hagwood (3 patents)
US Patent 5690319 · Granted Nov 25, 1997