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发明名称
Vorrichtung zum Vergleichen der Eigenfrequenz eines mechanischen Schwingungssystems mit einer Normalfrequenz
摘要
申请公布号
DE837776(C)
申请公布日期
1952.05.02
申请号
DE1950S020027
申请日期
1950.10.01
申请人
S. SMITH & SONS (ENGLAND) LIMITED
发明人
MEREDITH FREDERICK WILLIAM
分类号
G04D7/12
主分类号
G04D7/12
代理机构
代理人
主权项
地址
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