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经营范围
发明名称
Alliage d'aluminium perfectionné
摘要
申请公布号
FR39789(E)
申请公布日期
1932.03.12
申请号
FRD39789
申请日期
1931.02.19
申请人
ROLLS-ROYCE LIMITED
发明人
分类号
C22C21/12
主分类号
C22C21/12
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代理人
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