Control of undesirable vegetation on roads or similar surfaces or permanent ways

Official title: Control of undesirable vegetation on roads {or similar surfaces} or permanent ways of railways, {e.g. devices for scorching weeds or for applying herbicides}(destruction of undesirable vegetation in general A01M7/00 - A01M15/00, A01M21/00; weeding involving working the ballast E01B27/00; mowers for embankments A01D34/86; hedge shearing machines A01G3/04); Applying liquids, e.g. water, weed-killer bitumen, to permanent ways (specially to rails E01H8/10 {E01H8/105, E01H8/125}; for preserving sleepers E01B31/20)

E01H11/00 (Control of undesirable vegetation on roads or similar surfaces or permanent ways) appears on 54 US grants and 43 published applications in this corpus.