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发明名称
Retaining device
摘要
申请公布号
US1779868(A)
申请公布日期
1930.10.28
申请号
US19290391686
申请日期
1929.09.10
申请人
JAMES AIKEN
发明人
AIKEN JAMES
分类号
A44B6/00
主分类号
A44B6/00
代理机构
代理人
主权项
地址
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