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发明名称
Bleacher construction
摘要
申请公布号
US1875115(A)
申请公布日期
1932.08.30
申请号
US19310526298
申请日期
1931.03.30
申请人
CIRCLE A PRODUCTS CORPORATION
发明人
OBERDORFER HENRY D.
分类号
D06B3/10;E04H3/12
主分类号
D06B3/10
代理机构
代理人
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