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发明名称
Improvements in and relating to door knob locks
摘要
申请公布号
GB347745(A)
申请公布日期
1931.04.30
申请号
GB19300003388
申请日期
1930.01.31
申请人
ELLING ELLINGSON
发明人
分类号
E05B13/10
主分类号
E05B13/10
代理机构
代理人
主权项
地址
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