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发明名称
Oil seal
摘要
申请公布号
US2225758(A)
申请公布日期
1940.12.24
申请号
US19380243905
申请日期
1938.12.05
申请人
AETNA BALL BEARING MANUFACTURING COMPANY
发明人
STEIN LOUIS H.
分类号
F16C33/78;F16J15/32
主分类号
F16C33/78
代理机构
代理人
主权项
地址
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