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Zhenjiang, CN
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Patents Grants
last 30 patents
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Patent Grant
One-way load self-control spiral type brake
Patent number
8,042,657
Issue date
Oct 25, 2011
Zhejiang Nowvow Mechanical and Electrical Co., Ltd.
Guogang Zhang
B66 - HOISTING LIFTING HAULING
Patents Applications
last 30 patents
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Patent Application
ONE-WAY LOAD SELF-CONTROL SPIRAL TYPE BRAKE
Publication number
20110155837
Publication date
Jun 30, 2011
Guogang ZHANG
B66 - HOISTING LIFTING HAULING