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发明名称
Dispositif de signalisation par ondes à haute fréquence
摘要
申请公布号
FR940636(A)
申请公布日期
1948.12.17
申请号
FRD940636
申请日期
1946.08.28
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
分类号
H03D7/14
主分类号
H03D7/14
代理机构
代理人
主权项
地址
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