Patent classifications
E
FIXED CONSTRUCTIONS
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E01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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E01B
PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
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25/00
Tracks for special kinds of railways
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E01B25/22
Tracks for railways with the vehicle suspended from rigid supporting rails
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E01B25/24
Supporting rails; Auxiliary balancing rails; Supports or connections for rails
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