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发明名称
Bone conduction receiver
摘要
申请公布号
US2339148(A)
申请公布日期
1944.01.11
申请号
US19420470463
申请日期
1942.12.29
申请人
SONOTONE CORPORATION
发明人
CARLISLE RICHARD W.
分类号
H04R17/00
主分类号
H04R17/00
代理机构
代理人
主权项
地址
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