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发明名称
Door control
摘要
申请公布号
US2743475(A)
申请公布日期
1956.05.01
申请号
US19520295868
申请日期
1952.06.27
申请人
MACNERLAND WILLIAM M
发明人
MACNERLAND WILLIAM M.
分类号
E05F3/10
主分类号
E05F3/10
代理机构
代理人
主权项
地址
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