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发明名称
Ball bearing
摘要
申请公布号
US2433499(A)
申请公布日期
1947.12.30
申请号
US19460670953
申请日期
1946.05.20
申请人
JOSEPH F. GOHN
发明人
WITTHOFFT CHARLES H.
分类号
F16C19/18;F16C19/54
主分类号
F16C19/18
代理机构
代理人
主权项
地址
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