Chen Defu

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Xiamen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Controllable self-cleaning device for a flushing spray nozzle
- Patent number 9,828,756
- Issue date Nov 28, 2017
- WDI (XIAMEN) TECHNOLOGY INC.
- Chen Defu
- E03 - WATER SUPPLY SEWERAGE
Information Patent Grant
Air suction spray nozzle
- Patent number 9,499,967
- Issue date Nov 22, 2016
- WDI (XIAMEN) TECHNOLOGY INC.
- Chen Defu
- E03 - WATER SUPPLY SEWERAGE

Patents Applicationslast 30 patents

Information Patent Application
Air Suction Spray Nozzle
- Publication number 20160053474
- Publication date Feb 25, 2016
- WDI (Xiamen) Technology Inc.
- Chen Defu
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Application
Controllable self-cleaning device for a flushing spray nozzle
- Publication number 20160017586
- Publication date Jan 21, 2016
- WDI (Xiamen) Technology Inc.
- Chen Defu
- E03 - WATER SUPPLY SEWERAGE