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Mains signalling systems
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Patent number 5,912,633
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Issue date Jun 15, 1999
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Remote Metering Systems Limited
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Robert Joseph Allison
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Electric supply control
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Patent number 5,786,683
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Issue date Jul 28, 1998
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Remote Metering Systems Ltd.
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Paul Nicholas Williams
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G01 - MEASURING TESTING
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Mains signalling systems
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Patent number 5,731,765
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Issue date Mar 24, 1998
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Remote Metering Systems, Ltd.
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Robert Joseph Allison
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Mains phase determination
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Patent number 5,617,329
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Issue date Apr 1, 1997
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Remote Metering Systems Ltd.
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Robert J. Allison
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G01 - MEASURING TESTING