| http://www.w3.org/ns/prov#value | - 20130240569DEVICE COMPRISING A NON-RETURN VALVE - The invention relates to a device for dispensing a liquid, including a piston that is movable within a chamber and a nozzle connected to the piston such that the movement of the piston causes the movement of the nozzle, wherein one end of the piston engages the chamber so as to form a non-return valve.09-19-2013
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