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发明名称
Gesprächszähler für Telephonzentralen.
摘要
申请公布号
AT115995(B)
申请公布日期
1930.01.25
申请号
ATD115995
申请日期
1928.11.07
申请人
VEREINIGTE TELEPHON- UND TELEGRAPHENFABRIKS-AKTIEN-GESELLSCHAFT CZEIJA, NISSL & CO.
发明人
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主分类号
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代理人
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