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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit einer Personenrufeinrichtung
摘要
申请公布号
DE683736(C)
申请公布日期
1939.11.14
申请号
DE1936T047015D
申请日期
1936.06.10
申请人
TELEFONBAU UND NORMALZEIT LEHNER & CO.
发明人
HEIBEL AUGUST;JACOBY RICHARD
分类号
H04M11/02
主分类号
H04M11/02
代理机构
代理人
主权项
地址
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