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发明名称
Dispositifs piézoélectriques
摘要
申请公布号
FR829898(A)
申请公布日期
1938.07.08
申请号
FRD829898
申请日期
1937.11.25
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H03H9/02;H03H9/19
主分类号
H03H9/02
代理机构
代理人
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地址
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