RG

Richard L. Grant

OE Otis Engineering: 1 patents #13 of 39Top 35%
📍 Phoenix, AZ: #38 of 235 inventorsTop 20%
🗺 Arizona: #166 of 945 inventorsTop 20%
Overall (1989): #66,039 of 140,708Top 50%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4813481 Expendable flapper valve Richard M. Sproul, Frank Giusti, Jr., Kennedy J. Brown 1989-03-21