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GB9303994D0
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Improvements relating to duplex communications systems
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GB9302975D0
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Improvements relating to duplex communications systems
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GB9302846D0
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Improvements relating to communications systems
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GB9223207D0
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Improvements relating to duplex communications systems
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GB9217525D0
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Improvements relating to duplex communications systems
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GB9217524D0
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Cordless telephone system
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GB9213996D0
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Method and apparatus for controlling amplifier power
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GB9212263D0
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System for data recovery
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GB9126240D0
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Diversity antenna
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GB9125446D0
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Improvements in battery charging
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GB9125331D0
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Illumination of displays
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GB9102935D0
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Improvements in and relating to antennae
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GB9102936D0
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Digital communications systems
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GB8829661D0
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Duplex communications systems
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GB8806194D0
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Transceivers
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GB8805063D0
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Aerials
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GB8804811D0
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Waveform encoder/decoder
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