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发明名称
Method of forming a running thread nipple from flat stock
摘要
申请公布号
US2137797(A)
申请公布日期
1938.11.22
申请号
US19360076556
申请日期
1936.04.27
申请人
KORNEL BERGER
发明人
BERGER KORNEL
分类号
B21H3/00
主分类号
B21H3/00
代理机构
代理人
主权项
地址
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