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发明名称
Tamping tool
摘要
A railway ballast tamping tool is disclosed which has a foot welded to the lower end of a shank. The foot has rectangular front and rear faces and is gradually tapered from one side to the other.
申请公布号
US4160419(A)
申请公布日期
1979.07.10
申请号
US19770842335
申请日期
1977.10.14
申请人
CANRON, INC.
发明人
STEWART, JOHN K.
分类号
E01B27/16;(IPC1-7):E01B27/13
主分类号
E01B27/16
代理机构
代理人
主权项
地址
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