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发明名称
Bridge deck or floor
摘要
申请公布号
US2241512(A)
申请公布日期
1941.05.13
申请号
US19380232203
申请日期
1938.09.28
申请人
GREULICH GERALD G
发明人
GREULICH GERALD G.
分类号
E01D19/12
主分类号
E01D19/12
代理机构
代理人
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