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发明名称
Nummernschalter zur Sperrung bestimmter Anrufnummern
摘要
申请公布号
DE618430(C)
申请公布日期
1935.09.11
申请号
DE1932T040722D
申请日期
1932.05.18
申请人
TELEPHON-APPARAT-FABRIK E. ZWIETUSCH & CO. G.M.B.H.
发明人
HORN ARNO;MARBURG HANS
分类号
H04M1/677;H04M17/02
主分类号
H04M1/677
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代理人
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