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发明名称
Truss structure
摘要
申请公布号
US2139363(A)
申请公布日期
1938.12.06
申请号
US19370175076
申请日期
1937.11.17
申请人
GRAHAM WALTER M;BENZON FRANK B
发明人
GRAHAM WALTER M.;BENZON FRANK B.
分类号
E04C3/17
主分类号
E04C3/17
代理机构
代理人
主权项
地址
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