Longguan Zhang

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Chengdu, CN

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Patents Applicationslast 30 patents

Information Patent Application
METHOD AND SYSTEM FOR THREE DIMENSIONAL POSITIONING IN SUBWAY CONST...
- Publication number 20240300555
- Publication date Sep 12, 2024
- China Railway Engineering Services Co., Ltd.
- Ke Chen
- B61 - RAILWAYS
Information Patent Application
POWER DECENTRALIZED ELECTRIC LOCOMOTIVE APPARATUS
- Publication number 20240227873
- Publication date Jul 11, 2024
- China Railway Engineering Services Co., Ltd.
- Yuanshun Zhuang
- B61 - RAILWAYS
Information Patent Application
POWER DECENTRALIZED ELECTRIC LOCOMOTIVE APPARATUS
- Publication number 20240132120
- Publication date Apr 25, 2024
- China Railway Engineering Services Co., Ltd.
- Yuanshun Zhuang
- B61 - RAILWAYS