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发明名称
Perfectionnements aux appareils électriques utilisant des dispositifs piézoélectriques
摘要
申请公布号
FR702095(A)
申请公布日期
1931.03.28
申请号
FRD702095
申请日期
1930.07.09
申请人
发明人
ROBINSON JAMES
分类号
H04B1/26
主分类号
H04B1/26
代理机构
代理人
主权项
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