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Yongfei Yu
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Guangdong, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Quick locking piece and display screen assembly
Patent number
10,995,787
Issue date
May 4, 2021
ROE VISUAL CO., LTD.
Danhu Cai
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Leveling device and easy-to-level display screen
Patent number
10,857,656
Issue date
Dec 8, 2020
ROE VISUAL CO., LTD.
Danhu Cai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Guiding device and self-unloading anti-separation display device
Patent number
10,775,656
Issue date
Sep 15, 2020
ROE VISUAL CO., LTD.
Danhu Cai
G02 - OPTICS
Information
Patent Grant
LED display screen with a quick installation structure
Patent number
D804712
Issue date
Dec 5, 2017
ROE VISUAL Co., Ltd.
Danhu Cai
D26 - Lighting
Patents Applications
last 30 patents
Information
Patent Application
Quick Locking Piece and Display Screen Assembly
Publication number
20190316623
Publication date
Oct 17, 2019
ROE Visual Co., Ltd.
Danhu Cai
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Unloading Device and Self-unloading Display Device
Publication number
20180374400
Publication date
Dec 27, 2018
ROE VISUAL CO., LTD
Danhu CAI
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Guiding Device and Self-unloading Anti-separation Display Device
Publication number
20180321544
Publication date
Nov 8, 2018
ROE VISUAL CO., LTD
Danhu CAI
G02 - OPTICS
Information
Patent Application
LEVELING DEVICE AND EASY-TO-LEVEL DISPLAY SCREEN
Publication number
20180318985
Publication date
Nov 8, 2018
ROE VISUAL CO., LTD
Danhu CAI
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS