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发明名称
Schalldose fuer Sprechmaschinen u. dgl., insbesondere fuer elektrische Tonabnahme
摘要
申请公布号
DE561659(C)
申请公布日期
1932.10.17
申请号
DED561659D
申请日期
1930.08.23
申请人
N. V. PHILIP'S GLOEILAMPENFABRIEKEN
发明人
HOLST DR. GILLIS
分类号
G11B3/46;H04R11/08
主分类号
G11B3/46
代理机构
代理人
主权项
地址
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