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经营范围
发明名称
Acoustic transducer
摘要
申请公布号
US3136382(A)
申请公布日期
1964.06.09
申请号
US19620173226
申请日期
1962.02.14
申请人
EDWARD THALER
发明人
THALER EDWARD
分类号
H04R1/22;H04R1/28
主分类号
H04R1/22
代理机构
代理人
主权项
地址
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