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经营范围
发明名称
Disposable surgical mask
摘要
申请公布号
US3170461(A)
申请公布日期
1965.02.23
申请号
US19610138767
申请日期
1961.09.18
申请人
WATTS JR HILLARY G
发明人
JR. HILLARY G. WATTS,
分类号
A41D13/11
主分类号
A41D13/11
代理机构
代理人
主权项
地址
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