He ZHANG

Follow

Person

Shanghai, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Pump and a valve assembly therefor
- Patent number 10,662,932
- Issue date May 26, 2020
- National Oilwell Varco Petroleum Equipment (Shanghai) Co., Ltd.
- He Zhang
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
A PUMP AND A VALVE ASSEMBLY THEREFOR
- Publication number 20180003314
- Publication date Jan 4, 2018
- NATIONAL OILWELL VARCO PETROLEUM EQUIPMENT (SHANGHAI) CO., LTD.
- He ZHANG
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...