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一种口腔扩张练习器

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Affilication of Author(s):数学与统计学院

Patent Coverage:国内

School Sign:第一单位

Type of Patent:实用专利

Application Number:201320170693.X

Service Invention or Not:yes

Application Date:2013-04-08

Publication Date:2013-09-04

First Author:费文龙

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