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Changchun, CN
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last 30 patents
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Patent Grant
Pressure-bearing device and sealing method for simulating excavatio...
Patent number
11,650,140
Issue date
May 16, 2023
Changchun Puce Test Instrument Co., Ltd.
Bowen Zheng
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
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Patent Application
PRESSURE-BEARING DEVICE AND SEALING METHOD FOR SIMULATING EXCAVATIO...
Publication number
20230093113
Publication date
Mar 23, 2023
Changchun Puce Test Instrument Co., Ltd.
Bowen ZHENG
G01 - MEASURING TESTING