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公开(公告)号:US1556961A
公开(公告)日:1925-10-13
申请号:US70256624
申请日:1924-03-28
Applicant: F P ROSBACK COMPANY
Inventor: ROSBACK FREDERICK P
IPC: B41F1/40
CPC classification number: B41F1/40
公开(公告)号:US1556961A
公开(公告)日:1925-10-13
申请号:US70256624
申请日:1924-03-28
Applicant: F P ROSBACK COMPANY
Inventor: ROSBACK FREDERICK P
IPC: B41F1/40
CPC classification number: B41F1/40