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经营范围
发明名称
Procédé de prépolarisation longitudinale d'un corps constitué par au moins une couche d'un matériau piézo-électrique
摘要
申请公布号
FR1198027(A)
申请公布日期
1959.12.04
申请号
FRD1198027
申请日期
1958.02.14
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
H01G7/02
主分类号
H01G7/02
代理机构
代理人
主权项
地址
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