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发明名称
Ear protector
摘要
申请公布号
US2574288(A)
申请公布日期
1951.11.06
申请号
US19480053836
申请日期
1948.10.11
申请人
ROSENBLATT MAURICE C
发明人
ROSENBLATT MAURICE C.
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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