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发明名称
Mask with internal supports for spectacles
摘要
申请公布号
US2962722(A)
申请公布日期
1960.12.06
申请号
US19590787989
申请日期
1959.01.20
申请人
MINE SAFETY APPLIANCES COMPANY
发明人
CURRAN THOMAS R.
分类号
A62B18/08
主分类号
A62B18/08
代理机构
代理人
主权项
地址
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