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发明名称
Grandstand
摘要
申请公布号
US1760801(A)
申请公布日期
1930.05.27
申请号
US19280270304
申请日期
1928.04.16
申请人
WETZEL CHARLES H
发明人
WETZEL CHARLES H.
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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