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发明名称
FABRICATION OF HOLLOW INTERNALLY REINFORCED METAL STRUCTURES
摘要
申请公布号
CA498452(A)
申请公布日期
1953.12.15
申请号
CAD498452
申请日期
申请人
ROBERT MITCHELL CO. LIMITED
发明人
HERMAN W. SONTHEIM
分类号
主分类号
代理机构
代理人
主权项
地址
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