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发明名称
Eichverfahren fuer Geraete zum Messen des Schalldruckes
摘要
申请公布号
DE515253(C)
申请公布日期
1931.01.08
申请号
DE1927G070201D
申请日期
1927.05.07
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
MEYER DR. E.;GRUETZMACHER DR. MARTIN
分类号
G01H3/00
主分类号
G01H3/00
代理机构
代理人
主权项
地址
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