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发明名称
SCHALLDICHTER OHRPFROPF AUS EXPANDIERTEM POLYMERMATERIAL.
摘要
申请公布号
AT33934(T)
申请公布日期
1988.05.15
申请号
AT19830830216T
申请日期
1983.11.03
申请人
AMPLIFON S.P.A.
发明人
CHIAVACCI, PAOLO;VALORI, GIUSEPPE
分类号
(IPC1-7):A61F11/02
主分类号
(IPC1-7):A61F11/02
代理机构
代理人
主权项
地址
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