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发明名称
Transducer
摘要
申请公布号
US2771512(A)
申请公布日期
1956.11.20
申请号
US19510225988
申请日期
1951.05.12
申请人
WEBSTER ELECTRIC COMPANY
发明人
MUNROE DAVID J.
分类号
H04R17/06
主分类号
H04R17/06
代理机构
代理人
主权项
地址
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