Zongtao ZHANG

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Guangzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Loudspeaker and loudspeaker shock absorption structure
- Patent number 11,089,394
- Issue date Aug 10, 2021
- GUANGZHOU SHIRUI ELECTRONICS CO. LTD.
- Jiabin Yuan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker and loudspeaker shock absorption structure
- Patent number 10,750,264
- Issue date Aug 18, 2020
- GUANGZHOU SHIRUI ELECTRONICS CO., LTD.
- Jiabin Yuan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Loudspeaker and loudspeaker shock absorption structure
- Patent number 10,708,678
- Issue date Jul 7, 2020
- GUANGZHOU SHIRUI ELECTRONICS CO., LTD.
- Jiabin Yuan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
LOUDSPEAKER AND LOUDSPEAKER SHOCK ABSORPTION STRUCTURE
- Publication number 20200296495
- Publication date Sep 17, 2020
- GUANGZHOU SHIRUI ELECTRONICS CO. LTD.
- Jiabin YUAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOUDSPEAKER AND LOUDSPEAKER SHOCK ABSORPTION STRUCTURE
- Publication number 20200221199
- Publication date Jul 9, 2020
- Guangzhou Shirui Electronics Co., Ltd.
- Jiabin YUAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
LOUDSPEAKER AND LOUDSPEAKER SHOCK ABSORPTION STRUCTURE
- Publication number 20200077167
- Publication date Mar 5, 2020
- GUANGZHOU SHIRUI ELECTRONICS CO., LTD.
- Jiabin YUAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE