Hai Dou

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Zhongshan, CN

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Patents Grantslast 30 patents

Information Patent Grant
Diffuser, centrifugal compression power system and bladeless fan
- Patent number 11,905,970
- Issue date Feb 20, 2024
- GD MIDEA ENVIRONMENT APPLIANCES MFG CO., LTD.
- Hai Dou
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Diffuser, centrifugal compression power system and bladeless fan
- Patent number 10,634,163
- Issue date Apr 28, 2020
- Hai Dou
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

Information Patent Application
DIFFUSER, CENTRIFUGAL COMPRESSION POWER SYSTEM AND BLADELESS FAN
- Publication number 20200224673
- Publication date Jul 16, 2020
- GD MIDEA ENVIRONMENT APPLIANCES MFG CO., LTD.
- Hai DOU
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
DIFFUSER, CENTRIFUGAL COMPRESSION POWER SYSTEM AND BLADELESS FAN
- Publication number 20180030998
- Publication date Feb 1, 2018
- GD MIDEA ENVIRONMENT APPLIANCES MFG CO., LTD.
- Hai Dou
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...