WG

Willis G. Groth

H& H.A. Phillips &: 2 patents #2 of 5Top 40%
Overall (All Time): #2,366,620 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4331343 Wheel construction and arrangement — 1982-05-25
4272997 Drive mechanism — 1981-06-16