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GB1370396A
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Phase modulation equipment
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GB1353863A
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Apparatus for analysing the transmission characteristics of a quadripole energised by a pulse modulated high frequency wave
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GB1319214A
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Trajectograph for manual control of receiving aerials in stations at high latitudes
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GB1308874A
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Device for combining the outputs of a pair of aerials with orthogonal planes of polarisation
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GB1309508A
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Mounting of integrated circuits
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GB1354931A
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Digital source of periodic signals
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