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公开(公告)号:US921147A
公开(公告)日:1909-05-11
申请号:US1908459454
申请日:1908-10-26
Applicant: F A NEIDER COMPANY
Inventor: NEIDER FRED A , HAFER WILLIAM
CPC classification number: B21G5/00
公开(公告)号:US921147A
公开(公告)日:1909-05-11
申请号:US1908459454
申请日:1908-10-26
Applicant: F A NEIDER COMPANY
Inventor: NEIDER FRED A , HAFER WILLIAM
CPC classification number: B21G5/00