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公开(公告)号:US3365925A
公开(公告)日:1968-01-30
申请号:US27871663
申请日:1963-05-07
Applicant: ASEA AB
Inventor: STIG JOHNSSON
IPC: B21B31/02
CPC classification number: B21B31/02
公开(公告)号:US3365925A
公开(公告)日:1968-01-30
申请号:US27871663
申请日:1963-05-07
Applicant: ASEA AB
Inventor: STIG JOHNSSON
IPC: B21B31/02
CPC classification number: B21B31/02