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经营范围
发明名称
Perfectionnements aux émetteurs télégraphiques
摘要
申请公布号
FR912252(A)
申请公布日期
1946.08.05
申请号
FRD912252
申请日期
1945.02.16
申请人
发明人
PELLE PIERRE
分类号
H04L15/20
主分类号
H04L15/20
代理机构
代理人
主权项
地址
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