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Technology Development and Related Patents of Piezoelectric Loudspeaker

JIA Yang;LIU Zihan;LIU Tao;XIANG Wei;Patent Examination Cooperation Center of the Patent Office,SIPO;  
Development of piezoelectric loudspeaker is introduced in this paper. Technology characteristics of Piezoelectric loudspeaker of different typical piezoelectricity material is introduced,resolutions to typical technology problems of every kind of piezoelectric loudspeakers are proposed by introducing patent applications related to those loudspeakers.
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