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Improvements in or relating to change-speed gearboxes
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Improvements in or relating to devices for compressing a gas and simultaneously producing a vacuum
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Improvements in or relating to rotary cylindrical oxygenators
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Improved variable throw crank mechanism for controlling the stroke of a pump diaphragm
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Improvements in or relating to by-pass regulating devices
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Improvements in or relating to multiple-jet flowmeters
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Improved apparatus for investigating basal metabolism
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Recording spirometer
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Improvements in or relating to casings for multiple-inflow impeller watermeters
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Improvements in or relating to velocity flow meters
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Improvements in or relating to velocity flow meters
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Vane wheel water meter
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Vane wheel water meter
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An improved flow meter of the multiple admission passage type
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A device for automatically removing the air from water flow meters
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Ferromagnetic armature for an electromagnetic recording or measuring apparatus
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Improvements in and relating to impeller type water meters
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A water meter
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Rinsing arrangements for the bearing of the vane wheel in a liquid flow meter
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Rotary flow meter
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