Joo Il Lee

Follow

Person

Chungcheongbuk-do, KR

People

Patents Grantslast 30 patents

Information Patent Grant
Color cathode ray tube having a developed electron gun structure
- Patent number 6,545,403
- Issue date Apr 8, 2003
- Orion Electric Co., Ltd.
- Joo Il Lee
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode gun with grid electrode having contoured apertures
- Patent number 6,255,767
- Issue date Jul 3, 2001
- Orion Electric Co., Ltd.
- Joo Il Lee
- H01 - BASIC ELECTRIC ELEMENTS