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| Number | Title | Issue Date |
| 4050567 | Shift mechanism for typewriter A shift mechanism for typewriters has the capability of moving the carriage and a platen supported thereby from a first position to a second or third position along a longitudinal path on opposite sides of the first position. The first position is the nor... | 09/27/1977 |
| 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 |
| 3972404 | Typewriter shift mechanism Depressing the upper case shift key lever pivots a balance beam from a first to a second position, thereby raising the lower case shift lever to an inactive position. When the upper case shift key lever is released, the balance beam is returned to its fir... | 08/03/1976 |
