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发明名称
Réseau téléphonique à centraux automatiques collectifs
摘要
申请公布号
FR969200(A)
申请公布日期
1950.12.15
申请号
FRD969200
申请日期
1948.07.15
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
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代理人
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