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发明名称
Converting electrical oscillations into mechanical movement
摘要
申请公布号
US1804838(A)
申请公布日期
1931.05.12
申请号
US19270194361
申请日期
1927.05.26
申请人
GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H. HALLESCHES
发明人
MEISSNER ALEXANDER
分类号
H01L41/09
主分类号
H01L41/09
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