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发明名称
Einrichtung zur Erzeugung mechanischer Schwingungen
摘要
申请公布号
DE678537(C)
申请公布日期
1939.07.17
申请号
DE1936B176584D
申请日期
1936.12.11
申请人
DR. FRITZ BRUNS
发明人
BRUNS DR. FRITZ
分类号
G09B23/06
主分类号
G09B23/06
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