发明名称 LETTER PLACEMENT INDICATOR FOR TYPEWRITERS AND MEANS RESPONSIVE TO THE INDICATOR FOR SIMULTANEOUS SETTING OF MARGIN STOPS
摘要 A typewriter includes a mechanism for automatically positioning margin stops to correspond to a predetermined position of a letter placement indicator. A visual end-of-line arrangement, a visual envelope positioning device and visual colored tab setting indicators are provided.
申请公布号 US3785471(A) 申请公布日期 1974.01.15
申请号 USD3785471 申请日期 1971.08.30
申请人 DODDS I,CA 发明人 DODDS I,CA
分类号 B41J29/50;(IPC1-7):B41J21/02 主分类号 B41J29/50
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