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USPTO Patent Rankings Data through Sept 30, 2025
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Doug. W. Olschlager — 1 Patent

Manfred, ND: #1 of 1 inventorsTop 100%
North Dakota: #1,185 of 2,395 inventorsTop 50%
Overall (All Time): #3,844,966 of 4,157,543Top 95%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5092505 Shotgun sling apparatus 1992-03-03