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发明名称
Bridge construction
摘要
申请公布号
US2287210(A)
申请公布日期
1942.06.23
申请号
US19390304397
申请日期
1939.11.14
申请人
WELLBORN ARVIN S;WALL HARRY B
发明人
WELLBORN ARVIN S.;WALL HARRY B.
分类号
E01D19/04;E01D22/00
主分类号
E01D19/04
代理机构
代理人
主权项
地址
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