David John Norton

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Bathampton, GB

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Patents Grantslast 30 patents

Information Patent Grant
Railway signalling system
- Patent number 4,860,977
- Issue date Aug 29, 1989
- Westinghouse Brake & Signal Co. Ltd.
- David J. Norton
- B61 - RAILWAYS
Information Patent Grant
Railway control signal dynamic output interlocking systems
- Patent number 4,305,556
- Issue date Dec 15, 1981
- Westinghouse Brake & Signal Co. Ltd.
- David J. Norton
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Sequential checking of railway control signals
- Patent number 4,284,256
- Issue date Aug 18, 1981
- Westinghouse Brake and Signal Company Limited
- David J. Norton
- B61 - RAILWAYS
Information Patent Grant
Railway control signal interlocking systems
- Patent number 4,270,715
- Issue date Jun 2, 1981
- Westinghouse Brake & Signal Co.
- David J. Norton
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Circuit fault detection apparatus for railroad track circuit redund...
- Patent number 4,117,463
- Issue date Sep 26, 1978
- Westinghouse Brake & Signal Co. Ltd.
- David John Norton
- G01 - MEASURING TESTING