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Karl Marx
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| Number | Title | Issue Date |
| 4676674 | Data input/output unit Disclosed is a data input/output unit which is equipped with a control device (1), a tape puncher (5), a tape reader (4) and a printer (6), and which is capable of operating even in response to a command from a host computer. The printer (6) is provided w... | 06/30/1987 |
| 4553219 | Typewriter having calculating capability A typewriter having a calculating function, comprising: a keyboard having a plurality of character keys including letter, numeral and arithmetic symbol keys; an arithmetic unit for performing an arithmetic operation designated by at least one of the arith... | 11/12/1985 |
| 4162130 | Apparatus for performing deleting operations while backspacing in a composing machine A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic just... | 07/24/1979 |
| 3993179 | Justifying, text writing composing machine A desk top justifying text writing composing machine including automatic encoding and reading control means for operating a desk top justifying reproducing machine, or for operating larger and more sophisticated printing machines capable of automatic just... | 11/23/1976 |
| 3986449 | Selective printing apparatus There are disclosed method and apparatus for selectively printing human readable characters and a machine readable code on record members in the form of tickets, tags or labels. A disclosed method of printing relates to selective printing using one or mor... | 10/19/1976 |
| 3945480 | Justifying, text writing reproducing machine The illustrated embodiment is a desk top justifying text writing reproducing machine, illustratively controllable by a code reading means in a desk top text writing composing machine (the topic of our copending application for "JUSTIFYING, TEXT WRITING CO... | 03/23/1976 |