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发明名称
Dispositif de sourdine pour phonographes, gramophones et appareils similaires
摘要
申请公布号
FR683270(A)
申请公布日期
1930.06.10
申请号
FRD683270
申请日期
1929.10.14
申请人
发明人
ZILZER GYULA
分类号
H04R1/38
主分类号
H04R1/38
代理机构
代理人
主权项
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