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经营范围
发明名称
Automatic lock gate
摘要
申请公布号
US2375739(A)
申请公布日期
1945.05.08
申请号
US19440558801
申请日期
1944.10.16
申请人
CHRISTIAN ARNE
发明人
ARNE CHRISTIAN
分类号
E02B7/50
主分类号
E02B7/50
代理机构
代理人
主权项
地址
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