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Heilongjiang Province, CN
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Patents Grants
last 30 patents
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Patent Grant
Coupler draft gear, double-side operating coupler and lower lockpin...
Patent number
8,469,211
Issue date
Jun 25, 2013
Qiqihar Railway Rolling Stock Co., Ltd.
Qingmin Meng
B61 - RAILWAYS
Patents Applications
last 30 patents
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Patent Application
Coupler Draft Gear, Double-Side Operating Coupler and Lower Lockpin...
Publication number
20110049078
Publication date
Mar 3, 2011
Qiqihar Railway Rolling Stock Co., Ltd
Qingmin Meng
B61 - RAILWAYS