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发明名称
Electrical transducer
摘要
申请公布号
US2768246(A)
申请公布日期
1956.10.23
申请号
US19520268023
申请日期
1952.01.24
申请人
CHARLES LEGORJU
发明人
KLEIN SIEGFRIED
分类号
H04R23/00
主分类号
H04R23/00
代理机构
代理人
主权项
地址
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