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DK142157B
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Electrochemical electrode assembly.
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GB1356389A
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Electrode assemblies
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GB1141883A
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Improvements in and relating to valves
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GB1142867A
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Improvements in or relating to electrical indicating or measuring apparatus
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GB1129145A
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Improvements in and relating to electrical testing apparatus
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GB1073189A
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Improvements in and relating to electrical measuring and like instruments
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FR1387058A
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Improvements to electric capacitors
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FR1311070A
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Improvements to and relating to variable electric capacitors
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FR1305619A
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Improvements relating to electrical control and measurement devices
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GB985195A
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Improvements in and relating to electric variable capacitors
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FR1238695A
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Improvements in electrical indicating or measuring devices
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US3007112A
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Electrical indicating or measuring instruments
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GB868603A
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Improvements in and relating to electrical indicating or measuring instruments
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Device comprising an electric capacitor with periodically variable capacitance
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Devices comprising electrical condensers adapted to vary their capacity periodically
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GB774116A
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Improvements in or relating to devices comprising electrical condensers adapted to vary their capacity periodically
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GB657548A
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Improvements in or relating to devices for testing gases
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CA774192A
|
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Electric capacitors
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CA585370A
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Periodically variable electrical condenser
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