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发明名称
Spacer for reenforcement rods
摘要
申请公布号
US1911957(A)
申请公布日期
1933.05.30
申请号
US19320596172
申请日期
1932.03.02
申请人
JACOB KASSMIR
发明人
KASSMIR JACOB
分类号
E04C5/18
主分类号
E04C5/18
代理机构
代理人
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