Patent classifications
E
FIXED CONSTRUCTIONS
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E02
HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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E02F
DREDGING; SOIL-SHIFTING
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3/00
Dredgers; Soil-shifting machines
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E02F3/76
Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling; scarifying; devices
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E02F3/84
Drives or control devices therefor; , e.g. hydraulic drive systems
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E02F3/844
for positioning the blade, e.g. hydraulically
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E02F3/847
using electromagnetic, optical or acoustic beams to determine the blade position, e.g. laser beams
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