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发明名称
Bar support
摘要
申请公布号
US1887890(A)
申请公布日期
1932.11.15
申请号
US19300426456
申请日期
1930.02.07
申请人
ROBERTSON ROBERT R
发明人
ROBERTSON ROBERT R.
分类号
E04C5/18
主分类号
E04C5/18
代理机构
代理人
主权项
地址
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