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发明名称
Ear protector
摘要
申请公布号
US2881759(A)
申请公布日期
1959.04.14
申请号
US19560627419
申请日期
1956.12.10
申请人
HOCKS ROBERT W;DENNIS JAMES H
发明人
HOCKS ROBERT W.;DENNIS JAMES H.
分类号
A61F11/08
主分类号
A61F11/08
代理机构
代理人
主权项
地址
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