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发明名称
METHOD AND APPARATUS FOR THE TESTING AND TREATMENT OF HEARING DEFICIENCIES
摘要
申请公布号
US3531595(A)
申请公布日期
1970.09.29
申请号
USD3531595
申请日期
1966.10.31
申请人
MICHAEL S. DEMAREE
发明人
MICHAEL S. DEMAREE
分类号
A61B5/12;H04R25/00;(IPC1-7):H04R29/00
主分类号
A61B5/12
代理机构
代理人
主权项
地址
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