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经营范围
发明名称
Annular ball bearing
摘要
申请公布号
GB462229(A)
申请公布日期
1937.03.01
申请号
GB19350021852
申请日期
1935.08.01
申请人
ROBERT ANNEN
发明人
分类号
G04B31/012
主分类号
G04B31/012
代理机构
代理人
主权项
地址
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