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经营范围
发明名称
Apparat für Gehörgeschädigte.
摘要
申请公布号
CH226647(A)
申请公布日期
1943.04.15
申请号
CHD226647
申请日期
1942.06.18
申请人
BIERI,ERNST,DR.
发明人
BIERI,ERNST,DR.
分类号
A61F11/00
主分类号
A61F11/00
代理机构
代理人
主权项
地址
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