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Alvin E. Ratzlaff — 1 Patent

Orienta, OK: #1 of 1 inventorsTop 100%
Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #4,113,433 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4206819 Dumping bulldozing assembly for a farm tractor — 1980-06-10

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