E01B 3/22

Sub-Class

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Description

Class  E01B : PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS


Subclass 3/22: Transverse or longitudinal sleepers (for switches or crossings E01B 7/22); Other means resting directly on the ballastway for supporting rails made from steel Longitudinal sleepers; Longitudinal sleepers integral or combined with tie-rods; Combined longitudinal and transverse sleepers

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
9695553 Modular railroad track assemblyJun 04, 15Jul 04, 17Not available
9644323 Train rail track structure systemsMar 03, 16May 09, 17Not available
9556565 Train rail track structure systemsApr 15, 14Jan 31, 17Not available

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