Method for manufacturing porous type ion exchange resin, porous type ion exchange resin manufactured by the method, and water reducer composition for concrete containing thereof
KR102008337B1
An urinal chlorine water automatic supply system
KR20200095054A
Method for caculating and managing employee wages and server using the same
KR20200066057A
How to send a group message to multiple mobile phones using a website or application
KR20200007442A
Three dimensional shape sanitary pad
KR20170133711A
Automatic snow removal device for vinyl house
KR101759835B1
Heat pipe
KR20160056003A
Moving device and kickboard having the same
KR20150063651A
Elevators door control system
KR20150048957A
Method and system for providing alarm service based on multi client
KR20140128034A
Heat pipe for lighting and the method thereof
KR20140077285A
soundbreaker
KR20130089962A
Real-time remote multimedia education system using app
KR20120030833A
Recycling method and apparatus of crosslinked polyethylene
KR20120012523A
The mixer for using ac power source and solar cell
KR20090066084A
Calcium-coated grain and preparing method therof
KR20090036748A
Lift instrument for removing fold
KR20080095023A
Silicone sponge medical implant made by using gas-bubble and the method for fixing it
KR20080043893A
Method and device for manufacturing plastic multiple-walled tube and plastic-walled thereof
KR20080031598A
Method and device for manufacturing plastic multiple-walled tube and plastic-walled thereof
