Inventor

FENG XIAOQIONG

CN3 patents

Patents

3 patents

US12149908B2Nov 19, 2024

Sound device

AAC MICROTECH CHANGZHOU CO LTD2 citations69

US12335709B2Jun 17, 2025

Sound generator

AAC MICROTECH CHANGZHOU CO LTD0 citations48

US12317053B2May 27, 2025

Double-sided sound device

AAC MICROTECH CHANGZHOU CO LTD0 citations43