Hui Qiang Yu

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Guangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Beveled-end steel railroad
- Patent number 10,550,524
- Issue date Feb 4, 2020
- Hui Yu
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents

Information Patent Application
BEVELED-END STEEL RAILROAD
- Publication number 20180291562
- Publication date Oct 11, 2018
- Hui YU
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Application
TENT WITH AUTOMATICALLY STORING WINDOW AND DOOR COVERINGS
- Publication number 20110155199
- Publication date Jun 30, 2011
- The Coleman Company, Inc.
- David A. Harper
- E04 - BUILDING