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发明名称
Removable sign supporting device
摘要
申请公布号
US1824578(A)
申请公布日期
1931.09.22
申请号
US19290376622
申请日期
1929.07.08
申请人
THAKE HENRY G
发明人
THAKE HENRY G.
分类号
E01F9/011;E01F9/013;G09F7/18
主分类号
E01F9/011
代理机构
代理人
主权项
地址
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