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发明名称
Concrete stairway
摘要
申请公布号
US3055146(A)
申请公布日期
1962.09.25
申请号
US19580767973
申请日期
1958.10.17
申请人
FLORENTINO LOBATO
发明人
LOBATO FLORENTINO
分类号
B28B7/22;E04G13/06
主分类号
B28B7/22
代理机构
代理人
主权项
地址
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