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发明名称
Bridge construction
摘要
申请公布号
US1984567(A)
申请公布日期
1934.12.18
申请号
US19330655096
申请日期
1933.02.03
申请人
BRIGGS ABEL C
发明人
BRIGGS ABEL C.
分类号
E01D2/00;E01D6/00
主分类号
E01D2/00
代理机构
代理人
主权项
地址
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