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发明名称
Apparatus for forming screw threads
摘要
申请公布号
US2690089(A)
申请公布日期
1954.09.28
申请号
US19460694585
申请日期
1946.09.03
申请人
EMMA G. BEDKER
发明人
BEDKER LEO W.
分类号
B21H3/04
主分类号
B21H3/04
代理机构
代理人
主权项
地址
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