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发明名称
Method of making shovels
摘要
申请公布号
US1760607(A)
申请公布日期
1930.05.27
申请号
US19280252145
申请日期
1928.02.06
申请人
GOULD ROBERTSON NATHANIEL
发明人
ROBERTSON NATHANIEL GOULD
分类号
B21D53/66
主分类号
B21D53/66
代理机构
代理人
主权项
地址
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