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发明名称
Schaltungsanordnung fuer tonfrequente Signalgabe
摘要
申请公布号
DE931242(C)
申请公布日期
1955.08.04
申请号
DE1952M014889
申请日期
1952.07.25
申请人
STANDARD ELEKTRIZITAETS-GESELLSCHAFT AKTIENGESELLSCHAFT
发明人
GUENTHER ERHARD
分类号
H04Q1/446
主分类号
H04Q1/446
代理机构
代理人
主权项
地址
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