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发明名称
Ear protector
摘要
申请公布号
US2719523(A)
申请公布日期
1955.10.04
申请号
US19540432339
申请日期
1954.05.25
申请人
VON GIERKE HENNING E
发明人
GIERKE HENNING E. VON
分类号
A61F11/10
主分类号
A61F11/10
代理机构
代理人
主权项
地址
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