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发明名称
Systèmes de commutation téléphoniques et autres
摘要
申请公布号
FR883417(A)
申请公布日期
1943.07.05
申请号
FRD883417
申请日期
1942.06.20
申请人
LE MATERIEL TELEPHONIQUE
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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