Assignee
No assignee recorded.
Inventors
- Alfred Bahnson (4 patents)
- Douglas J. Koebler (13 patents)
- Unknown
- Raymond K. Houck (20 patents)
- Kris Sachsenmeier (6 patents)
- Lei Qian (31 patents)
US Patent 6830931 · Granted Dec 14, 2004
No assignee recorded.