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| Number | Title | Issue Date |
| 4265558 | Differential key lock mechanism for 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... | 05/05/1981 |
| 4140403 | 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... | 02/20/1979 |
