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经营范围
发明名称
Roller bearing retainer
摘要
申请公布号
US1943894(A)
申请公布日期
1934.01.16
申请号
US19290363484
申请日期
1929.05.16
申请人
JOHNSON JAMES P
发明人
JOHNSON JAMES P.
分类号
F16C33/46
主分类号
F16C33/46
代理机构
代理人
主权项
地址
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