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发明名称
Screw or like nicking machines
摘要
申请公布号
US2741784(A)
申请公布日期
1956.04.17
申请号
US19520293580
申请日期
1952.06.14
申请人
HILL FRAY VICTOR
发明人
FRAY VICTOR HILL
分类号
B23G9/00
主分类号
B23G9/00
代理机构
代理人
主权项
地址
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