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发明名称
Sheet-metal shaft
摘要
申请公布号
US1789972(A)
申请公布日期
1931.01.27
申请号
US19280253949
申请日期
1928.02.13
申请人
THE UNION METAL MANUFACTURING COMPANY
发明人
FRAHM CARL A.;RIEMENSCHNEIDER EDMUND W.
分类号
E04H12/08
主分类号
E04H12/08
代理机构
代理人
主权项
地址
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