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发明名称
Drawbench
摘要
申请公布号
US1870419(A)
申请公布日期
1932.08.09
申请号
US19290363661
申请日期
1929.05.16
申请人
ALUMINUM COMPANY OF AMERICA
发明人
PALMER ROY D.;JEFFERS ROLAND L.
分类号
B21C1/16
主分类号
B21C1/16
代理机构
代理人
主权项
地址
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