2013.12.16 Patent certificate (fusion device for polytetrafluoroethyle… Page info Writer INNODIS Date Created 2019-10-23 Main text List Prev2013.12.16 Patent certificate (polytetrafluoroethylene fusion method and products manufactured by this method) 19.10.23 Next2012.12.12 Patent certificate (fluid valve with integrated flow sensor) 19.10.23