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Huizhou City, TW

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Patents Applicationslast 30 patents

Information Patent Application
Loudspeaker Magnetic Circuit System Having U-Shaped Short-Circuit Ring
- Publication number 20190090063
- Publication date Mar 21, 2019
- Premium Loudspeakers (Hui Zhou) Co., Ltd.
- Zhi CHEN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE