John H. M. Hardy

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The Hague, NL

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Patents Grantslast 30 patents

Information Patent Grant
Switching of digital signals
- Patent number 4,430,733
- Issue date Feb 7, 1984
- Post Office
- John H. M. Hardy
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital signal switch system having space switch located between ti...
- Patent number 4,360,911
- Issue date Nov 23, 1982
- The Post Office
- John H. M. Hardy
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Switching of digital signals
- Patent number 4,306,303
- Issue date Dec 15, 1981
- The Post Office
- John H. M. Hardy
- H04 - ELECTRIC COMMUNICATION TECHNIQUE