U.S. federal trademark · Serial No. 85747147 · Reg. No. 4452372
Electronic systems composed primarily of sensors, user interfaces and controls for detecting spacing between multiple vehicles and between persons and vehicles used in the railway industry to prevent collisions between rail-mounted vehicles, excluding vehicles that are traveling on a roadway or other non-railway medium, for example, rail-mounted vehicles such as trains, hyrail vehicles and railway maintenance vehicles and used in the railway industry to prevent collisions between rail-mounted vehicles and persons, for example, railway employees
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