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发明名称
Schaltungsanordnung für das automatische Laden der Batterien in Fernsprechanlagen.
摘要
申请公布号
CH139026(A)
申请公布日期
1930.03.31
申请号
CHD139026
申请日期
1929.04.02
申请人
BELL TELEPHONE MANUFACTURING CO.
发明人
CO. BELL TELEPHONE MANUFACTURING
分类号
H04M19/00
主分类号
H04M19/00
代理机构
代理人
主权项
地址
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