KGApparatus and method for dosing of liquids in gas filled spacesWO1995023002A1 *28 Feb 199431 Ago 1995Joseph R ParadisControl of fluid flowWO2000025050A1 *24 Jun 19994 May 2000Vernay LaboratoriesDisc type check valveWO2013087962A1 *12 Dic 201220 Jun 2013Gonzalez Antonio GonzalezClosed device for filling drip chambers in cytostatic delivery devices, and safety device and filling system including s