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发明名称
Ornamental cover for hearing aids
摘要
申请公布号
US2595672(A)
申请公布日期
1952.05.06
申请号
US19490082109
申请日期
1949.03.18
申请人
GREENWOOD DOROTHEA E
发明人
GREENWOOD DOROTHEA E.
分类号
H04R25/02
主分类号
H04R25/02
代理机构
代理人
主权项
地址
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