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GB680301A
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Improvements in or relating to electric signalling systems by means of position modulated pulses
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GB661459A
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Improvements in or relating to a method and means of transmission by pulses
|
|
GB658479A
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Improvements in and relating to a method and means of translating signals of coded pulses
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GB665072A
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Improvements in or relating to a method and means of translating coded pulses
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GB694564A
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Electronic pulse distributing and counting apparatus
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GB659007A
|
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Method and devices for position transmitting by means of time modulated electric pulses
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