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公开(公告)号：US2756589A
公开(公告)日：1956-07-31
申请号：US36816253
申请日：1953-07-15
Applicant: BALDWIN LIMA HAMILTON CORP
Inventor： ALEXANDER ZEITLIN , LEON MOLLICK , MORRISON FREDERICK T
CPC classification number: B21J9/20 , B30B15/0094
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公开(公告)号：US2960221A
公开(公告)日：1960-11-15
申请号：US42231854
申请日：1954-04-12
Applicant: BALDWIN LIMA HAMILTON CORP
Inventor： ALBERS HEINRICH B , KRAUSE GERHARD P , MORRISON FREDERICK T , GEORGE GERARD
IPC: B21C25/02
CPC classification number: B21C25/02
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