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发明名称
Improvements in or relating to letter-box closures
摘要
申请公布号
GB854742(A)
申请公布日期
1960.11.23
申请号
GB19590020347
申请日期
1959.06.15
申请人
THOMPSON KERSHAW;JAMES HERBERT KERSHAW
发明人
分类号
A47G29/126
主分类号
A47G29/126
代理机构
代理人
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