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发明名称
Key-operated door knob assembly
摘要
申请公布号
US2729090(A)
申请公布日期
1956.01.03
申请号
US19520277167
申请日期
1952.03.18
申请人
FLORADAY BURTON S
发明人
FLORADAY BURTON S.
分类号
E05B55/00
主分类号
E05B55/00
代理机构
代理人
主权项
地址
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