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发明名称
Elektrisch in Transversalschwingungen gehaltene Stimmgabel
摘要
申请公布号
DE496842(C)
申请公布日期
1930.04.28
申请号
DENDATE039256D
申请日期
申请人
LES ETABLISSEMENTS EDOUARD BELIN;FERNAND HOLWECK
发明人
分类号
H03H9/215
主分类号
H03H9/215
代理机构
代理人
主权项
地址
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