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发明名称
Rückzugs- und Warnsignal für Sauerstoffschutzgeräte.
摘要
申请公布号
AT159003(B)
申请公布日期
1940.06.25
申请号
ATD159003
申请日期
1938.03.19
申请人
DR. OTTO HEINRICH DRAEGER
发明人
DR. OTTO HEINRICH DRAEGER
分类号
主分类号
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