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发明名称
Кнопочный переключатель для телефонных коммутаторов
摘要
申请公布号
SU75052(A1)
申请公布日期
1948.11.30
申请号
SU19470371542
申请日期
1947.10.30
申请人
KANAEV A.E.
发明人
KANAEV A.E.
分类号
H04M5/02
主分类号
H04M5/02
代理机构
代理人
主权项
地址
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