Assignee
Inventors
- Joseph W. Grez (51 patents)
- Gerardus Joannes Henricus Roddeman (4 patents)
- Johannes Müller (32 patents)
- Dannis Michel Brouwer (4 patents)
- Fridtjof Bremer (3 patents)
- Robert Cornelis Henricus Boereboom (2 patents)
US Patent 8425133 · Granted Apr 23, 2013