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发明名称
Doorknob attachment
摘要
申请公布号
US2587285(A)
申请公布日期
1952.02.26
申请号
US19490130731
申请日期
1949.12.02
申请人
BROSCOE EDWARD W
发明人
BROSCOE EDWARD W.
分类号
E05B13/00
主分类号
E05B13/00
代理机构
代理人
主权项
地址
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