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发明名称
Rettungsvorrichtung für Ertrinkende.
摘要
申请公布号
AT149068(B)
申请公布日期
1937.03.25
申请号
ATD149068
申请日期
1935.11.07
申请人
JOHANN RIEHS
发明人
JOHANN RIEHS
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主分类号
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