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发明名称
Dispositif de protection des organes de l'ouïe ne diminuant pas le pouvoir auditif
摘要
申请公布号
FR1512289(A)
申请公布日期
1968.02.02
申请号
FR19670096377
申请日期
1967.02.24
申请人
发明人
KAHN LEONARD RICHARD
分类号
A61F11/14;H04R25/00
主分类号
A61F11/14
代理机构
代理人
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地址
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