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last 30 patents
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Patent Grant
Activation apparatus of railway vehicle and railway vehicle having...
Patent number
11,247,704
Issue date
Feb 15, 2022
CRRC QINGDAO SIFANG CO., LTD.
Huiqing Zhang
B61 - RAILWAYS
Patents Applications
last 30 patents
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Patent Application
Activation Apparatus of Railway Vehicle and Railway Vehicle Having...
Publication number
20210221408
Publication date
Jul 22, 2021
CRRC QINGDAO SIFANG CO., LTD.
Huiqing ZHANG
B61 - RAILWAYS
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Patent Application
TRAIN
Publication number
20210221229
Publication date
Jul 22, 2021
Miao WANG
B60 - VEHICLES IN GENERAL