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公开(公告)号:US1417902A
公开(公告)日:1922-05-30
申请号:US47316121
申请日:1921-05-27
申请人: ROYAL TYPEWRITER CO INC
发明人: BERNARD HESS EDW ARD , CARY MYERS LEWIS
IPC分类号: B41J1/04 , B41J3/36 , B41J11/22 , B41J11/62 , B41J13/30 , B41J19/66 , B41J19/76 , B41J25/02 , B41J29/42 , B41J29/50
CPC分类号: B41J13/30 , B41J1/04 , B41J3/36 , B41J11/22 , B41J11/62 , B41J19/66 , B41J19/76 , B41J25/02 , B41J29/42 , B41J29/50