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发明名称
Concrete pipe joint
摘要
申请公布号
US2081313(A)
申请公布日期
1937.05.25
申请号
US19360065808
申请日期
1936.02.26
申请人
UKROPINA BOZIDAR J
发明人
UKROPINA BOZIDAR J.
分类号
F16L13/11;F16L25/00
主分类号
F16L13/11
代理机构
代理人
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