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发明名称
Perfectionnements apportés aux dispositifs électriques pour engendrer et émettre des signaux ultra-sonores
摘要
申请公布号
FR1342894(A)
申请公布日期
1963.11.15
申请号
FR19620910949
申请日期
1962.10.01
申请人
ADMIRAL CORPORATION
发明人
分类号
B06B1/02
主分类号
B06B1/02
代理机构
代理人
主权项
地址
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