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经营范围
发明名称
Dispositif absorbant acoustique
摘要
申请公布号
FR1108073(A)
申请公布日期
1956.01.09
申请号
FRD1108073
申请日期
1954.07.01
申请人
CONSTRUCTION CARTON BOIS
发明人
分类号
E04C2/36;G10K11/16;G10K11/172
主分类号
E04C2/36
代理机构
代理人
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地址
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