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Disigner of the Invention:刘倍佐

Type of Patent:国际

State of Patent:专利授权

Application Number:201220543973.6

Number of Inventors:2

Service Invention or Not:no

Application Date:2012-10-23

Authorization Date:2013-04-03

First Author:zhouyong

Pre One:一种改进的后挂式耳机