Li Zheng

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Kwun Tong, HK

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Patents Grantslast 30 patents

Information Patent Grant
Indicator lock for a public service room door
- Patent number 12,129,684
- Issue date Oct 29, 2024
- PIN GENIE Limited
- Li Zheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Door lock device and door lock having the same
- Patent number 11,873,663
- Issue date Jan 16, 2024
- Smart Electronic Industrial (Dong Guan) Co., Ltd.
- Li Zheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Indicator Lock For A Public Service Room Door
- Publication number 20240068272
- Publication date Feb 29, 2024
- PIN GENIE Limited
- Li Zheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Door Lock Device And Door Lock Having The Same
- Publication number 20220178171
- Publication date Jun 9, 2022
- Smart Electronic Industrial (Dong Guan) Co., Ltd.
- Li Zheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Smart Visual Lock System
- Publication number 20210067747
- Publication date Mar 4, 2021
- Pin Genie Inc.
- Li Zheng
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES