John W. Ansell

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Dorset, GB

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Patents Grantslast 30 patents

Information Patent Grant
Security arrangement for a telecommunications exchange system
- Patent number 4,858,223
- Issue date Aug 15, 1989
- The Plessey Company plc
- John W. Ansell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital switching network for telecommunications exchange
- Patent number 4,535,442
- Issue date Aug 13, 1985
- The Plessey Company plc
- Thomas S. Maddern
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telecommunications digital switchblock utilizing control switch sta...
- Patent number 4,530,089
- Issue date Jul 16, 1985
- The Plessey Company plc
- John W. Ansell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE