4. Patents 목록으로 돌아가기
10-2018-0131229 (2018.10.30) / 10-2095950 (2020.03.26)
10-2007-0036830 (2007.04.16) / 10-0800402 (2008.01.28)
10-2013-0068343 (2013.06.14) / 10-1293695 (2013.07.31)
10-2018-0058592 (2018.05.23) / 10-2080595 (2020.02.18)