Patent classifications
E
FIXED CONSTRUCTIONS
Load children
E02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
Load children
E02F
DREDGING; SOIL-SHIFTING
Load children
3/00
Dredgers; Soil-shifting machines
Load children Filter patents View analytics View as hierarchy
E02F3/76
Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling; scarifying; devices
Load children Filter patents View analytics View as hierarchy
E02F3/7622
Scraper equipment with the scraper blade mounted on a frame to be hitched to the tractor by bars, arms, chains or the like, the frame having no ground supporting means of its own, e.g. drag scrapers
Load children Filter patents View analytics View as hierarchy
E02F3/7631
with the scraper blade adjustable relative to the frame about a horizontal axis
Filter patents View analytics View as hierarchy