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经营范围
发明名称
Prestressed reinforced concrete floor beam
摘要
申请公布号
US2631450(A)
申请公布日期
1953.03.17
申请号
US19450622128
申请日期
1945.10.13
申请人
HIPPOLYTE LACHAISE JEAN CELEST
发明人
LACHAISE JEAN CELESTIN HIPPOLYTE
分类号
B28B23/22;E04C3/26
主分类号
B28B23/22
代理机构
代理人
主权项
地址
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