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发明名称
Secret locking device
摘要
申请公布号
US1887016(A)
申请公布日期
1932.11.08
申请号
US19300443276
申请日期
1930.04.11
申请人
HAGSTROM CARL J;HAGSTROM GOTTHARD E
发明人
HAGSTROM CARL J.;HAGSTROM GOTTHARD E.
分类号
E05B63/00
主分类号
E05B63/00
代理机构
代理人
主权项
地址
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