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Ningbo, CN
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last 30 patents
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Patent Grant
Controllable automatic umbrella unfolding device
Patent number
9,004,087
Issue date
Apr 14, 2015
Zhunan Ma
A45 - HAND OR TRAVELLING ARTICLES
Patents Applications
last 30 patents
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Patent Application
CONTROLLABLE AUTOMATIC UMBRELLA UNFOLDING DEVICE
Publication number
20140116481
Publication date
May 1, 2014
Zhunan Ma
A45 - HAND OR TRAVELLING ARTICLES