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发明名称
Einrichtung zum Messen von Schalldruecken oder Lautstaerken
摘要
申请公布号
DE666595(C)
申请公布日期
1938.10.22
申请号
DE1935S117410D
申请日期
1935.03.05
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
MERZ DR.-ING. LUDWIG
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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