GENEVA, Nov. 6 -- AAC MICROTECH (CHANGZHOU) CO., LTD. filed a patent application (CN2025/091979) for “SOUND-PRODUCING DEVICE”. With publication no. WO/2026/227310, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: H04R 9/06
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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