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last 30 patents
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Patent Grant
Electro-acoustic conversion device and terminal
Patent number
10,863,293
Issue date
Dec 8, 2020
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Bixiang Yan
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
ELECTRO-ACOUSTIC CONVERSION DEVICE AND TERMINAL
Publication number
20200068327
Publication date
Feb 27, 2020
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
Bixiang YAN
H04 - ELECTRIC COMMUNICATION TECHNIQUE