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发明名称
Method of forming material
摘要
申请公布号
US2455702(A)
申请公布日期
1948.12.07
申请号
US19440555028
申请日期
1944.09.20
申请人
DOUGLAS AIRCRAFT COMPANY, INC.
发明人
RECHTON GEORGE D.;WARD DELBERT J.;WATSON JACK H.
分类号
B21D22/04
主分类号
B21D22/04
代理机构
代理人
主权项
地址
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