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经营范围
发明名称
ELECTROACOUSTIC BONE CONDUCTION RECEIVER
摘要
申请公布号
US3423544(A)
申请公布日期
1969.01.21
申请号
USD3423544
申请日期
1965.09.13
申请人
BELTONE ELECTRONICS CORP.
发明人
ERWIN M. WEISS
分类号
H04R11/00;H04R25/00;(IPC1-7):H04R25/00
主分类号
H04R11/00
代理机构
代理人
主权项
地址
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