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发明名称
Shaft structure
摘要
申请公布号
US3049221(A)
申请公布日期
1962.08.14
申请号
US19590839502
申请日期
1959.09.11
申请人
THE JEFFREY GALION MANUFACTURING COMPANY
发明人
KILBOURNE JAMES
分类号
E21D9/12
主分类号
E21D9/12
代理机构
代理人
主权项
地址
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