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发明名称
Dispositif permettant la transformation des enregistrements de vibrations sonores envibrations électriques et inversement
摘要
申请公布号
FR728644(A)
申请公布日期
1932.07.08
申请号
FRD728644
申请日期
1931.12.19
申请人
发明人
TAWIL EDGAR-PIERRE
分类号
H04R17/04
主分类号
H04R17/04
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代理人
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