RJ

Ralph G. Jefferies

Overall (All Time): #2,373,668 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4240333 Hydrostatically driven road rollers Terence R. Heathcote 1980-12-23
4209988 Safety control system for self-propelled road rollers Colin G. Langworthy 1980-07-01