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公开(公告)号：US2077641A
公开(公告)日：1937-04-20
申请号：US10416236
申请日：1936-10-06
Applicant: SCHMIDT SCHE HEISSDAMPF
Inventor： RICHARD NIEDERSTRASSER
IPC: B21C37/28
CPC classification number: B21C37/283 , Y10T29/4944
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