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经营范围
发明名称
Vibratory piezoelectric transducers
摘要
申请公布号
GB926435(A)
申请公布日期
1963.05.15
申请号
GB19600009542
申请日期
1960.03.17
申请人
SONOTONE CORPORATION
发明人
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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