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发明名称
Schaltungsanordnung fuer Stufenrelais in Fernsprechanlagen
摘要
申请公布号
DE633247(C)
申请公布日期
1936.07.23
申请号
DED633247D
申请日期
1930.02.28
申请人
TELEFONBAU UND NORMALZEIT AKT.-GES.
发明人
HEIBEL AUGUST
分类号
H04Q1/32
主分类号
H04Q1/32
代理机构
代理人
主权项
地址
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