LONGKOU ZHONGYU INVESTMENT HOLDING LTD.

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Shandong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Hydraulic valve mechanism with variable valve opening times and int...
- Patent number 11,111,825
- Issue date Sep 7, 2021
- LONGKOU ZHONGYU INVESTMENT HOLDING LTD.
- Zhaoyu Wang
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

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Patents Applicationslast 30 patents

Information Patent Application
HYDRAULIC VALVE MECHANISM WITH VARIABLE VALVE OPENING TIMES AND INT...
- Publication number 20210262368
- Publication date Aug 26, 2021
- LONGKOU ZHONGYU INVESTMENT HOLDING LTD.
- Zhaoyu WANG
- F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES