RH

Roland John Hill

ND National Research Development: 1 patents #307 of 1,071Top 30%
Overall (All Time): #4,015,822 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4520302 Stepping motors and drive circuits therefor Paul Philip Acarnley 1985-05-28