Sang Kyu Lee

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Kyounggi-do, KR

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Patents Grantslast 30 patents

Information Patent Grant
Hinge for folding ladders
- Patent number 7,047,597
- Issue date May 23, 2006
- Sang Kyu Lee
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

Information Patent Application
Hinge for folding ladders
- Publication number 20040216954
- Publication date Nov 4, 2004
- Chan Bok Lee
- Sang Kyu Lee
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS