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发明名称
Antifriction thrust bearing for electric socket wrenches
摘要
申请公布号
US2584172(A)
申请公布日期
1952.02.05
申请号
US19470738543
申请日期
1947.04.01
申请人
UNDERWOOD BURL R
发明人
UNDERWOOD BURL R.
分类号
B25B21/00;F16C19/14
主分类号
B25B21/00
代理机构
代理人
主权项
地址
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