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发明名称
An improved key ring
摘要
申请公布号
GB483137(A)
申请公布日期
1938.04.12
申请号
GB19370026620
申请日期
1937.10.01
申请人
CHARLES PERCY ROOTS
发明人
分类号
A44B15/00
主分类号
A44B15/00
代理机构
代理人
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