RK

Richard A. Kelch

TS The O. M. Scott And Sons: 2 patents #12 of 36Top 35%
📍 Columbus, OH: #1,440 of 3,880 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,299,781 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5186732 Encapsulated slow release fertilizers Harold E. Thompson 1993-02-16
5089041 Encapsulated slow release fertilizers Harold E. Thompson 1992-02-18