RR

Roger D. Rion

OE Otis Engineering: 1 patents #122 of 228Top 55%
Overall (All Time): #4,007,458 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4632184 Submersible pump safety systems James B. Renfroe, Jr., Rennie L. Dickson 1986-12-30