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经营范围
发明名称
Collapsible ear tip
摘要
申请公布号
EP0613324(B1)
申请公布日期
1998.07.01
申请号
EP19940108410
申请日期
1988.12.08
申请人
MINNESOTA MINING AND MANUFACTURING COMPANY
发明人
PACKARD, THOMAS J.
分类号
A61B7/02;A61F11/08;G10K11/22;H04R1/10;H04R25/00;(IPC1-7):H04R25/00
主分类号
A61B7/02
代理机构
代理人
主权项
地址
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