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发明名称
Bearing
摘要
申请公布号
US2538921(A)
申请公布日期
1951.01.23
申请号
US19460679157
申请日期
1946.06.25
申请人
THE E. J. WILLIS COMPANY
发明人
SMEALLIE ROBERT D.
分类号
B63H23/36
主分类号
B63H23/36
代理机构
代理人
主权项
地址
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