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Yi Sug Kwon
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Changwon-si, KR
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Patents Grants
last 30 patents
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Patent Grant
Shock absorbing device for passenger conveyors
Patent number
7,533,765
Issue date
May 19, 2009
Otis Elevator Company
Yi Sug Kwon
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
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Patent Application
Shock Absorbing Device For Passenger Conveyors
Publication number
20080087522
Publication date
Apr 17, 2008
Yi Sug Kwon
B66 - HOISTING LIFTING HAULING