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发明名称
Perfectionnements aux haut-parleurs
摘要
申请公布号
FR971128(A)
申请公布日期
1951.01.12
申请号
FRD971128
申请日期
1948.09.07
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
CHAPMAN ROGER;TRIER ROBERT HENRY
分类号
H04R1/36
主分类号
H04R1/36
代理机构
代理人
主权项
地址
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