Wing Yin CHUNG

Follow

Person

KWUN TONG, HK

People

Patents Grantslast 30 patents

Information Patent Grant
Retractable leash with automatic locking and unlocking function
- Patent number 11,612,141
- Issue date Mar 28, 2023
- Wing Yin Chung
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Retractable leash with improved locking and unlocking mechanism
- Patent number 11,445,705
- Issue date Sep 20, 2022
- Wing Yin Chung
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Structure of a handle for a retractable leash
- Patent number 9,107,393
- Issue date Aug 18, 2015
- Wing Yin Chung
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

Information Patent Application
Retractable Leash With Improved Locking And Unlocking Mechanism
- Publication number 20200288674
- Publication date Sep 17, 2020
- Wing Yin CHUNG
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Application
RETRACTABLE LEASH WITH AUTOMATIC LOCKING AND UNLOCKING FUNCTION
- Publication number 20200205380
- Publication date Jul 2, 2020
- Wing Yin CHUNG
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Application
Structure of a handle for a retractable leash
- Publication number 20140216361
- Publication date Aug 7, 2014
- Wing Yin CHUNG
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING