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发明名称
Method and apparatus for making structural elements
摘要
申请公布号
US2581421(A)
申请公布日期
1952.01.08
申请号
US19480023486
申请日期
1948.04.27
申请人
DOUGLAS AIRCRAFT COMPANY, INC.
发明人
LOMBARD NATHANIEL A.;TAGGART THOMAS L.
分类号
B32B3/12
主分类号
B32B3/12
代理机构
代理人
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