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发明名称
Dowel and shear plate installing device for road building machines
摘要
申请公布号
US2399025(A)
申请公布日期
1946.04.23
申请号
US19420456279
申请日期
1942.08.26
申请人
HELTZEL JOHN N
发明人
HELTZEL JOHN N.
分类号
E01C23/04
主分类号
E01C23/04
代理机构
代理人
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