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发明名称
Railroad tie doweling machine
摘要
申请公布号
US3286649(A)
申请公布日期
1966.11.22
申请号
US19620168947
申请日期
1962.01.26
申请人
THE SINGER COMPANY
发明人
HUGHES RALPH
分类号
B27F4/00;E01B31/28
主分类号
B27F4/00
代理机构
代理人
主权项
地址
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