Assignee
Inventors
- Charles Liu (23 patents)
- Ivan Nelson Wakefield (23 patents)
- Geert Hendrik Weinans (4 patents)
- Ambrosius Gerardus Maria Pohlmann (1 patents)
- Theodorus Johannes Boersma (1 patents)
- Barteld Trip (5 patents)
US Patent 7869765 · Granted Jan 11, 2011