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发明名称
Safety key holder
摘要
A primary key is retained in a public location until released by one factor, such as operation of a secondary key, and by a concurrent other factor, such as an electrical signal.
申请公布号
US4567741(A)
申请公布日期
1986.02.04
申请号
US19830466052
申请日期
1983.02.14
申请人
TREMPALA, DOHN J.
发明人
TREMPALA, DOHN J.
分类号
E05B35/08;(IPC1-7):E05B11/00
主分类号
E05B35/08
代理机构
代理人
主权项
地址
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