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发明名称
Système excitateur pour la mise en action de la paroi du diffuseur d'un haut-parleur
摘要
申请公布号
FR672958(A)
申请公布日期
1930.01.09
申请号
FRD672958
申请日期
1929.04.11
申请人
发明人
PEREIASLAVTZEFF EUGENE
分类号
H04R1/20
主分类号
H04R1/20
代理机构
代理人
主权项
地址
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