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发明名称
Door control
摘要
申请公布号
US1790268(A)
申请公布日期
1931.01.27
申请号
US19290348015
申请日期
1929.03.18
申请人
HAGAN JOSEPH B
发明人
HAGAN JOSEPH B.
分类号
E05F11/04
主分类号
E05F11/04
代理机构
代理人
主权项
地址
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