SEMCO CO., LTD.
|SEMCO CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20120132232||PIPING CLEANING NOZZLE AND PIPING CLEANIGN METHOD USING PIPING CLEANING NOZZLE - Provided are a piping cleaning nozzle which effectively prevents back flow of a cleaning agent poured into piping in a building to clean the inner wall of the piping and to exterminate noxious organisms, and a piping cleaning method using the piping cleaning nozzle. An expanding and contracting body (||05-31-2012|