DW

Duane R. Winden

UN Unknown: 1 patents #29,356 of 83,584Top 40%
Overall (All Time): #3,599,447 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6315572 Method and system for computerized authoring, learning, and evaluation Terry Owens, Donald J. West, Douglas C. Draper, William M. Bancroft 2001-11-13