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发明名称
Structural element
摘要
申请公布号
US2293489(A)
申请公布日期
1942.08.18
申请号
US19410381360
申请日期
1941.03.01
申请人
CAUSEY GEORGE W
发明人
CAUSEY GEORGE W.
分类号
E04G1/14
主分类号
E04G1/14
代理机构
代理人
主权项
地址
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