OF

Oscar H. Freiman

OE Otis Engineering: 1 patents #122 of 228Top 55%
Overall (All Time): #3,979,845 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4685523 Removable side pocket mandrel James H. Paschal, Jr., Dickie L. Kernal 1987-08-11