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发明名称
Filtre passe-bas ou passe-haut comportant au moins deux cristaux oscillants
摘要
申请公布号
FR907132(A)
申请公布日期
1946.03.01
申请号
FRD907132
申请日期
1944.09.20
申请人
TELEFUNKEN GESELLSCHAFT FU:R DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
分类号
H03H9/00;H03H9/54
主分类号
H03H9/00
代理机构
代理人
主权项
地址
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