Thomas T. Shen

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East Hanover, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Wireless railroad grade crossing warning system
- Patent number 5,864,304
- Issue date Jan 26, 1999
- AT&T Corp.
- Irwin Gerszberg
- B61 - RAILWAYS
Information Patent Grant
Wireless communication base station
- Patent number 5,724,665
- Issue date Mar 3, 1998
- Lucent Technologies Inc.
- Salman Yousef Abbasi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for detecting railway activity
- Patent number 5,713,540
- Issue date Feb 3, 1998
- AT&T Corp.
- Irwin Gerszberg
- B61 - RAILWAYS