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发明名称
Door opening and door checking device
摘要
申请公布号
US2219800(A)
申请公布日期
1940.10.29
申请号
US19400317293
申请日期
1940.02.05
申请人
RUDOLPH I. SCHONITZER
发明人
ALLEN EDWIN L.
分类号
E05C17/20
主分类号
E05C17/20
代理机构
代理人
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地址
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