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Roger A. Zens

Zell, SD: #1 of 1 inventorsTop 100%

South Dakota: #7 of 67 inventorsTop 15%

Overall (1994): #72,417 of 165,921Top 45%

1 Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5372094	Bird feeder	—	1994-12-13