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发明名称
Improvements in the manufacture of pointed tubular metal articles
摘要
申请公布号
GB338592(A)
申请公布日期
1930.11.24
申请号
GB19290025606
申请日期
1929.08.22
申请人
SAMUEL JAMES EVERETT
发明人
分类号
A61M5/32;B21D53/00
主分类号
A61M5/32
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