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发明名称
IMPROVEMENTS IN OR RELATING TO FACE MASKS
摘要
申请公布号
GB1272576(A)
申请公布日期
1972.05.03
申请号
GB19680018085
申请日期
1968.04.17
申请人
CHAPMAN & SMITH LIMITED
发明人
EDWARD WILLIAM MCCREANOR
分类号
A62B18/02
主分类号
A62B18/02
代理机构
代理人
主权项
地址
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