Wei-Jen CHEN

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Taiwan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Easy-to-drawing-in umbrella
- Patent number 11,116,295
- Issue date Sep 14, 2021
- Chin-Hsing Cho
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Grant
Umbrella drawing-in by winding
- Patent number 10,743,626
- Issue date Aug 18, 2020
- Chin-Hsing Cho
- A45 - HAND OR TRAVELLING ARTICLES

Patents Applicationslast 30 patents

Information Patent Application
EASY-TO-DRAWING-IN UMBRELLA
- Publication number 20210196014
- Publication date Jul 1, 2021
- CHIN-HSING CHO
- A45 - HAND OR TRAVELLING ARTICLES
Information Patent Application
UMBRELLA DRAWING-IN BY WINDING
- Publication number 20190254395
- Publication date Aug 22, 2019
- CHIN-HSING CHO
- A45 - HAND OR TRAVELLING ARTICLES