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Charles Kettering
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| Number | Title | Issue Date |
| 4204780 | Typewriter with improved case shift means In a typewriter of the kind having a carriage movable vertically relative to the type bar assembly to provide three cases of type, the carriage rests on a shift member slidable vertically in guides formed in the body of the typewriter and a spring acts be... | 05/27/1980 |
| 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 |
| 3944043 | Shift mechanism in syllabic typewriters In typewriters comprising groups of type-bars, each group having a distinct printing point, each group being supported by a particular sector and certain sectors being movable independently from the others: A shift mechanism which allows the typist to put all ... | 03/16/1976 |