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II Shik Yoon

Seoul, KR: #18,030 of 39,741 inventorsTop 50%

Overall (All Time): #1,904,478 of 4,157,543Top 50%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
10618773	Elevator operation control device and method using monitor	—	2020-04-14
7469773	Assistant ceiling device for shielding escape hatch of an elevator	—	2008-12-30