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last 30 patents
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Patent Grant
Systems and methods for assisting a user in practicing a musical in...
Patent number
11,417,233
Issue date
Aug 16, 2022
SUNLAND INFORMATION TECHNOLOGY CO., LID.
Xiaolu Liu
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Patents Applications
last 30 patents
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Patent Application
SYSTEMS AND METHODS FOR ASSISTING A USER IN PRACTICING A MUSICAL IN...
Publication number
20220351637
Publication date
Nov 3, 2022
SUNLAND INFORMATION TECHNOLOGY CO., LTD.
Xiaolu LIU
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Application
SYSTEMS AND METHODS FOR ASSISTING A USER IN PRACTICING A MUSICAL IN...
Publication number
20200251011
Publication date
Aug 6, 2020
SUNLAND INFORMATION TECHNOLOGY CO., LTD.
Xiaolu LIU
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS