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GB864264A
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Improvements in or relating to electrical components
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GB822762A
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Improvements in or relating to voltage limiting apparatus
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GB566945A
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Improvements in and relating to variable resistances for operation at high frequencies
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GB566970A
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Improvements in alternating current bridge circuits
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GB561693A
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Improvements in and relating to impedance measuring apparatus
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GB554896A
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Improvements in alternating-current bridge circuits
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GB539630A
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Improvements in and relating to automatic gain control in electric signal transmission systems
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GB539903A
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Apparatus for measuring impedance
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GB526424A
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Improvements in and relating to thermionic valve circuits
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GB521828A
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Improvements in and relating to voltage-regulating apparatus
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GB515761A
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Improvements in and relating to apparatus for use in electric testing and measuring
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GB514729A
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Improvements in and relating to thermionic valve amplifiers
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GB509309A
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Improvements in and relating to electric signal transmission and the like systems
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GB490816A
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Improvements in and relating to measuring and indicating devices of the scale and pointer type
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GB486765A
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Improvements in and relating to electric circuit arrangements, for example for use in wattmeters
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