Lee-Tsung Chen

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Feng-Yuan City 420, TW

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Patents Grantslast 30 patents

Information Patent Grant
Three-piece combinative device with eyeglasses and attachment sungl...
- Patent number 7,178,916
- Issue date Feb 20, 2007
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Three pieces combinative eyeglasses
- Patent number 6,926,402
- Issue date Aug 9, 2005
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Structure of the rimless eyeglasses
- Patent number 6,827,439
- Issue date Dec 7, 2004
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Openable attachment sunglass to the spectacles
- Patent number 6,705,721
- Issue date Mar 16, 2004
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Separate clip for attachment glasses
- Patent number 6,604,822
- Issue date Aug 12, 2003
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Clip-on glasses
- Patent number 6,293,672
- Issue date Sep 25, 2001
- Lee-Tsung Chen
- G02 - OPTICS
Information Patent Grant
Attachment glasses to the spectacles
- Patent number 6,283,591
- Issue date Sep 4, 2001
- Lee-Tsung Chen
- G02 - OPTICS