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发明名称
Construction stage
摘要
申请公布号
US2426825(A)
申请公布日期
1947.09.02
申请号
US19460644113
申请日期
1946.01.29
申请人
GEARY FRANCIS H
发明人
GEARY FRANCIS H.
分类号
E04G3/26
主分类号
E04G3/26
代理机构
代理人
主权项
地址
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