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发明名称
Fernsprecheinrichtung mit Übernahmssperre für ankommende Rufe.
摘要
申请公布号
AT120333(B)
申请公布日期
1930.12.10
申请号
ATD120333
申请日期
1929.12.21
申请人
TELEPHON- U. TELEGRAPHENFABRIKS-A.-G. KAPSCH U. SOEHNE
发明人
分类号
主分类号
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