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发明名称
Helix former
摘要
申请公布号
US2591943(A)
申请公布日期
1952.04.08
申请号
US19480050294
申请日期
1948.09.21
申请人
KITSELMAN BROTHERS
发明人
KITSELMAN HARRY L.
分类号
B21F3/02
主分类号
B21F3/02
代理机构
代理人
主权项
地址
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