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经营范围
发明名称
Oil seal
摘要
申请公布号
US2626822(A)
申请公布日期
1953.01.27
申请号
US19450601192
申请日期
1945.06.23
申请人
BOYD DONALD A
发明人
BOYD DONALD A.
分类号
F16J15/32
主分类号
F16J15/32
代理机构
代理人
主权项
地址
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