Assignee
Inventors
- Isaac Billy Annan (8 patents)
- John Lindsey Flexner (7 patents)
- Hector Eduardo Portillo (7 patents)
- George Philip Lahm (80 patents)
- Thomas Paul Selby (65 patents)
- Thomas Martin Stevenson (81 patents)
US Patent 8022067 · Granted Sep 20, 2011