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公开(公告)号:US1050274A
公开(公告)日:1913-01-14
申请号:US1911618041
申请日:1911-03-30
Applicant: HENDERSON JAMES NICHOLAS
Inventor: HENDERSON JAMES NICHOLAS
CPC classification number: B21D5/02
公开(公告)号:US1050274A
公开(公告)日:1913-01-14
申请号:US1911618041
申请日:1911-03-30
Applicant: HENDERSON JAMES NICHOLAS
Inventor: HENDERSON JAMES NICHOLAS
CPC classification number: B21D5/02