U.S. federal trademark · Serial No. 98542880 · Reg. No. 8153350
safety systems comprised of wireless sensors for detecting obstacles in railway grade crossings; wireless transmitters and receivers for communicating the detection of obstacles in railway grade crossings; wireless sensors for detecting obstacles in railway grade crossings; transmitters and receivers for communicating the detection of obstacles in railway grade crossings; sensor devices for detecting obstacles in railway grade crossings; devices for wireless radio transmission and reception; devices for alerting people of obstacles in railway grade crossings
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