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经营范围
发明名称
Système de fixation pour cristaux piézo-électriques
摘要
申请公布号
FR917928(A)
申请公布日期
1947.01.24
申请号
FRD917928
申请日期
1945.11.23
申请人
PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING A. G.
发明人
分类号
H03H9/09
主分类号
H03H9/09
代理机构
代理人
主权项
地址
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