Chan Bok Lee

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Chungjoo-si, KR

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Patents Grantslast 30 patents

Information Patent Grant
Hinge for collapsible ladders
- Patent number 6,711,780
- Issue date Mar 30, 2004
- Sinclair Worldwide, Inc.
- Chan Bok Lee
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Safety unit of hinge for folding ladder
- Publication number 20050166364
- Publication date Aug 4, 2005
- Chan Bok Lee
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Hinge for collapsible ladders
- Publication number 20030037412
- Publication date Feb 27, 2003
- Chan Bok Lee
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES