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经营范围
发明名称
Colonne acoustique
摘要
申请公布号
FR1371502(A)
申请公布日期
1964.09.04
申请号
FR19634402023
申请日期
1963.09.12
申请人
发明人
TREGOUET JEAN, JOSEPH, PIERRE
分类号
H04R1/40
主分类号
H04R1/40
代理机构
代理人
主权项
地址
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