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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E02F3/18
with digging wheels turning round an axis; , e.g. bucket-type wheels
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E02F3/20
with tools that only loosen the material; , i.e. mill-type wheels
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E02F3/205
with a pair of digging wheels, e.g. slotting machines
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