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发明名称
Verfahren zum Morsen ueber Starkstromnetze unter Zuhilfenahme nur kurzzeitiger Spannungsabsenkungsimpulse
摘要
申请公布号
DE694438(C)
申请公布日期
1940.08.01
申请号
DE193701S9431D
申请日期
1937.11.06
申请人
SIEMENS-SCHUCKERTWERKE AKT.-GES.
发明人
ORTNER OTTO
分类号
H04L5/02
主分类号
H04L5/02
代理机构
代理人
主权项
地址
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