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Patent applications and USPTO patent grants for Cowen; David.The latest application filed is for "sensor unit for detecting the approach of a train and system with said sensor unit".
Patent | Date |
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Monitoring system, wayside LED signal, and method for monitoring a wayside LED signal Grant 11,161,532 - Smith , et al. November 2, 2 | 2021-11-02 |
Sensor Unit For Detecting The Approach Of A Train And System With Said Sensor Unit App 20210001900 - Cowen; David | 2021-01-07 |
Remote control case Grant 10,782,013 - Cowen Sept | 2020-09-22 |
Logfile-related technologies and techniques Grant 10,628,263 - Cowen , et al. | 2020-04-21 |
Monitoring System, Wayside Led Signal, And Method For Monitoring A Wayside Led Signal App 20190185034 - Smith; Jeffrey ;   et al. | 2019-06-20 |
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