RG

Raymond L. Graf

SP S & M Precast: 6 patents #1 of 1Top 100%
📍 Henryville, IN: #2 of 9 inventorsTop 25%
🗺 Indiana: #4,098 of 33,936 inventorsTop 15%
Overall (All Time): #538,730 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
12351786 Barrel apparatus 2025-07-08
11834821 Water quality unit for flow-through manhole 2023-12-05
11505936 Water quality unit for flow-through manhole 2022-11-22
11208816 Flow channel form design for manhole assemblies 2021-12-28
11174455 Barrel apparatus 2021-11-16
10941557 Water quality unit for flow-through manhole 2021-03-09
10704277 Flow channel form design for manhole assemblies 2020-07-07
10407652 Barrel apparatus 2019-09-10
9586762 Rotatable long-bar handling apparatus 2017-03-07