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发明名称
Improvements in making bent pipe elements and elements thus obtained
摘要
申请公布号
GB479653(A)
申请公布日期
1938.02.09
申请号
GB19370013364
申请日期
1937.05.11
申请人
SOCIETE ANONYME DES HAUTS-FOURNEAUX & FONDERIES DE PONT-A-MOUSSON
发明人
分类号
B21D7/00
主分类号
B21D7/00
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代理人
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地址
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