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发明名称
Transducer
摘要
申请公布号
US2847516(A)
申请公布日期
1958.08.12
申请号
US19530350594
申请日期
1953.04.23
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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