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发明名称
Geheimhaltungsgeraet fuer Telegraphiebetrieb
摘要
申请公布号
DE881060(C)
申请公布日期
1953.06.25
申请号
DED881060
申请日期
1950.09.26
申请人
DR.-ING. EDGAR GRETENER, ZUERICH (SCHWEIZ)
发明人
(SCHWEIZ) KURT EHRAT, ZUERICH
分类号
B65D85/30;G09C1/10;H04L9/22
主分类号
B65D85/30
代理机构
代理人
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地址
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