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发明名称
Structural element made from paper and like sheets
摘要
申请公布号
US2428979(A)
申请公布日期
1947.10.14
申请号
US19450622454
申请日期
1945.10.15
申请人
DUFAY-CHROMEX LIMITED
发明人
MAY GEORGE
分类号
B31D3/02;E04C2/36
主分类号
B31D3/02
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代理人
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