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发明名称
Flächiges Schwingelement, insbesondere Flachmembrane
摘要
申请公布号
AT220689(B)
申请公布日期
1962.04.10
申请号
AT19600007682
申请日期
1960.10.12
申请人
RADIO CORPORATION OF AMERICA
发明人
分类号
主分类号
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