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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E02F3/7663
Graders with the scraper blade mounted under a frame supported by wheels, or the like
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E02F3/7668
with the scraper blade being pivotable about a vertical axis
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