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发明名称
Improvements in metal seals
摘要
申请公布号
GB331210(A)
申请公布日期
1930.06.25
申请号
GB19290009514
申请日期
1929.03.25
申请人
GEORGE SIMKINS MATHEWS
发明人
分类号
G09F3/03
主分类号
G09F3/03
代理机构
代理人
主权项
地址
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