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经营范围
发明名称
Art of making bearing cages and the product thereof
摘要
申请公布号
US1958025(A)
申请公布日期
1934.05.08
申请号
US19320621132
申请日期
1932.07.07
申请人
S K F INDUSTRIES, INC.
发明人
STYRI HAAKON
分类号
C21D9/40
主分类号
C21D9/40
代理机构
代理人
主权项
地址
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