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经营范围
发明名称
Building block
摘要
申请公布号
US2720779(A)
申请公布日期
1955.10.18
申请号
US19480005886
申请日期
1948.02.02
申请人
EARNEST HENRY J
发明人
EARNEST HENRY J.
分类号
E04C1/40
主分类号
E04C1/40
代理机构
代理人
主权项
地址
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