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Ningbo, Zhejiang, CN
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Patents Grants
last 30 patents
Patents Applications
last 30 patents
Information
Patent Application
Combination Padlock With Revolving Cover
Publication number
20130219973
Publication date
Aug 29, 2013
NINGBO YONGFA GROUP CO., LTD.,
Zhongwei Cao
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
Door Locking System With An Idle Handle
Publication number
20120291503
Publication date
Nov 22, 2012
NINGBO YONGFA GROUP CO., LTD.,
Zaifu Yang
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
Emergently Openable Safe Door
Publication number
20120060726
Publication date
Mar 15, 2012
NINGBO YONGFA GROUP CO., LTD.,
Yongyao Yao
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
Dual Key Bi-Step Lock
Publication number
20120060571
Publication date
Mar 15, 2012
NINGBO YONGFA GROUP CO., LTD.,
Yongyao Yu
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
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