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发明名称
Process of making crank shafts
摘要
申请公布号
US2790227(A)
申请公布日期
1957.04.30
申请号
US19480025353
申请日期
1948.05.06
申请人
AMELIA S. FINE
发明人
FINE BERNARD M.
分类号
B21K1/08
主分类号
B21K1/08
代理机构
代理人
主权项
地址
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