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发明名称
Stromstoßsender für bestimmte Rufnummern für Selbstanschluß-Nebenstellenanlagen.
摘要
申请公布号
AT153698(B)
申请公布日期
1938.06.25
申请号
ATD153698
申请日期
1934.11.10
申请人
TELEPHON-WAEHLER GESELLSCHAFT M. B. H.
发明人
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主分类号
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