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Ningbo, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Bottom opening password lock
Patent number
11,306,509
Issue date
Apr 19, 2022
Zhihui Cai
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Grant
Laminated padlock
Patent number
11,248,394
Issue date
Feb 15, 2022
Zhihui Cai
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Patents Applications
last 30 patents
Information
Patent Application
LAMINATED PADLOCK
Publication number
20210301556
Publication date
Sep 30, 2021
NINGBO JIANGBEI RUIFENG LOCK INDUSTRY CO., LTD.
Zhihui CAI
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information
Patent Application
BOTTOM OPENING PASSWORD LOCK
Publication number
20200199908
Publication date
Jun 25, 2020
NINGBO JIANGBEI RUIFENG LOCK INDUSTRY CO., LTD.
Zhihui CAI
E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES