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发明名称
Portable grandstand
摘要
申请公布号
US2651081(A)
申请公布日期
1953.09.08
申请号
US19500141737
申请日期
1950.02.01
申请人
STEEL, INC.
发明人
JR. STACY S. STORER,
分类号
E04H3/12
主分类号
E04H3/12
代理机构
代理人
主权项
地址
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