Roy Baxendale

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Harpenden, GB

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Patents Grantslast 30 patents

Information Patent Grant
Intruder alarm system
- Patent number 4,742,338
- Issue date May 3, 1988
- GEC Avionics Limited
- Roy Baxendale
- G08 - SIGNALLING
Information Patent Grant
Vibration-responsive intruder alarm system
- Patent number 4,307,387
- Issue date Dec 22, 1981
- Elliott Brothers (London) Limited
- Roy Baxendale
- G08 - SIGNALLING
Information Patent Grant
Vibration responsive intruder alarm systems
- Patent number 4,223,304
- Issue date Sep 16, 1980
- Elliott Brothers (London) Limited
- Peter J. Barowitz
- G08 - SIGNALLING