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发明名称
Posthole digger
摘要
申请公布号
US2230757(A)
申请公布日期
1941.02.04
申请号
US19400342374
申请日期
1940.06.25
申请人
LONG MATHIAS M
发明人
LONG MATHIAS M.
分类号
E21B7/02
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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