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发明名称
Einrichtung zur Aufnahme akustischer Schwingungen.
摘要
申请公布号
CH189685(A)
申请公布日期
1937.03.15
申请号
CHD189685
申请日期
1935.12.18
申请人
RONAG A.-G.
发明人
A.-G. RONAG
分类号
G11B3/00;H04R1/42
主分类号
G11B3/00
代理机构
代理人
主权项
地址
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