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1.发明授权Method of making drawn, pressed, or stamped cupped objects of metals and alloys 失效制造金属和合金的拉制，压制或冲压杯形物体的方法
公开(公告)号：US2312830A
公开(公告)日：1943-03-02
申请号：US37802441
申请日：1941-02-08
Applicant: CONTINUOUS CASTING CORP
Inventor： ELDRED BYRON E
IPC: B21D22/20
CPC classification number: B21D22/201
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公开(公告)号：US2242350A
公开(公告)日：1941-05-20
申请号：US23365538
申请日：1938-10-06
Applicant: CONTINUOUS CASTING CORP
Inventor： ELDRED BYRON E
CPC classification number: B22D11/0401 , B22D11/14
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