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发明名称
Lined concrete pipe
摘要
申请公布号
US2070888(A)
申请公布日期
1937.02.16
申请号
US19350028115
申请日期
1935.06.24
申请人
HECTOR ESCHENBRENNER
发明人
ESCHENBRENNER HECTOR
分类号
E03F3/04
主分类号
E03F3/04
代理机构
代理人
主权项
地址
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