发明名称 Typewriter accessory device for bold face typing
摘要 Device for use with a typewriter having manual half back space lever to permit making bold face characters. When bold face typing is desired, the device is removably secured to the typewriter, adjacent to the half-space lever, to permit incremental adjustment of the lever and typewriter carriage. By proper adjustment of the lever with the device, restruck characters can be made to have the appearance of bold face.
申请公布号 US4436441(A) 申请公布日期 1984.03.13
申请号 US19820395680 申请日期 1982.07.06
申请人 ROBERT, GEORGE R. 发明人 ROBERT, GEORGE R.
分类号 B41J3/30;(IPC1-7):B41J7/18 主分类号 B41J3/30
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