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发明名称
SOUND RECORDING APPARATUS
摘要
申请公布号
CA323577(A)
申请公布日期
1932.06.21
申请号
CAD323577
申请日期
申请人
LA SOCIETE FRANCAISE DES FILMS GRAVES VIVAVOX;LAURENCE P. SHARPLES
发明人
EUGENE ALEXANDRE HUGUENARD
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