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发明名称
Circuit de postes de téléphonie d'usagers
摘要
申请公布号
FR938291(A)
申请公布日期
1948.09.09
申请号
FRD938291
申请日期
1946.08.05
申请人
AUTOMATIC ELECTRIC LABORATORIES INC.
发明人
分类号
H04M1/74
主分类号
H04M1/74
代理机构
代理人
主权项
地址
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