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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E02F3/64
Buckets cars, i.e. having scraper bowls
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E02F3/6454
Towed (i.e. pulled or pushed) scrapers
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