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经营范围
发明名称
Hearing aid employing a viscoelastic material to adhere components to the casing
摘要
申请公布号
US4969534(A)
申请公布日期
1990.11.13
申请号
US19880229614
申请日期
1988.08.08
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
KOLPE, VASANT V.;CHAMBERLIN, DAVIS W.;OLIVEIRA, ROBERT J.
分类号
H04R25/00;H04R25/02
主分类号
H04R25/00
代理机构
代理人
主权项
地址
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