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经营范围
发明名称
Pile driving apparatus
摘要
申请公布号
US3172484(A)
申请公布日期
1965.03.09
申请号
US19630281480
申请日期
1963.05.20
申请人
RALPH KIRBY
发明人
KIRBY RALPH
分类号
E02D7/16
主分类号
E02D7/16
代理机构
代理人
主权项
地址
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