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Douglas L. Stengel

Valentine, NE: #1 of 4 inventorsTop 25%

Nebraska: #2,834 of 5,697 inventorsTop 50%

Overall (All Time): #3,321,258 of 4,157,543Top 80%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
7510479	Sandbox	—	2009-03-31