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发明名称
Schallsignalvorrichtung, bei der eine Sprechmaschine zu vorher festgesetzten Zeitpunkten durch ein eine Ausloesevorrichtung beeinflussendes Uhrwerk in Gang gesetzt wird
摘要
申请公布号
DE562133(C)
申请公布日期
1932.10.21
申请号
DE1929M111948D
申请日期
1929.09.21
申请人
ANDREE JEANNE MONCHARMONT
发明人
分类号
G04B23/00
主分类号
G04B23/00
代理机构
代理人
主权项
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