Patent classifications
E
FIXED CONSTRUCTIONS
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E01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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E01D
CONSTRUCTION OF BRIDGES,; ELEVATED ROADWAYS; OR VIADUCTS; ASSEMBLY OF BRIDGES
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15/00
Movable or portable bridges; Floating bridges
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E01D15/06
Bascule bridges; Roller bascule bridges, e.g. of Scherzer type
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