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发明名称
Concrete pipe construction
摘要
申请公布号
US1961263(A)
申请公布日期
1934.06.05
申请号
US19330668972
申请日期
1933.05.02
申请人
UKROPINA BOZIDAR J
发明人
UKROPINA BOZIDAR J.
分类号
F16L13/11
主分类号
F16L13/11
代理机构
代理人
主权项
地址
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