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发明名称
Perfectionnements apportés aux postes d'abonnés pour des installations téléphoniques privées
摘要
申请公布号
FR1145983(A)
申请公布日期
1957.11.05
申请号
FRD1145983
申请日期
1955.11.15
申请人
AKTIEBOLAGET GYLLING & CO
发明人
分类号
H04M1/52
主分类号
H04M1/52
代理机构
代理人
主权项
地址
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