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发明名称
Keyhole guard
摘要
申请公布号
US1842642(A)
申请公布日期
1932.01.26
申请号
US19310535789
申请日期
1931.05.07
申请人
ALBINO SAMUEL F
发明人
ALBINO SAMUEL F.
分类号
E05B17/16
主分类号
E05B17/16
代理机构
代理人
主权项
地址
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