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发明名称
Rail drill feed mechanism
摘要
申请公布号
US2887909(A)
申请公布日期
1959.05.26
申请号
US19560623073
申请日期
1956.11.19
申请人
RACINE HYDRAULICS AND MACHINERY, INC.
发明人
MILLER HAROLD G.
分类号
E01B31/06
主分类号
E01B31/06
代理机构
代理人
主权项
地址
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