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经营范围
发明名称
Contoured race for roller bearings
摘要
申请公布号
US3384426(A)
申请公布日期
1968.05.21
申请号
US19650455881
申请日期
1965.05.14
申请人
REED ROLLER BIT COMPANY
发明人
JR. PERCY W. SCHUMACHER,
分类号
E21B10/22;F16C33/58
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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