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发明名称
Ear muff
摘要
申请公布号
US2281357(A)
申请公布日期
1942.04.28
申请号
US19390309905
申请日期
1939.12.18
申请人
JOHNSON VICTOR R
发明人
JOHNSON VICTOR R.
分类号
A61F11/06
主分类号
A61F11/06
代理机构
代理人
主权项
地址
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