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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 4140407 | Ribbon feed mechanism responsive to case shaft mechanism and printing mechanism A ribbon feed mechanism for a typewriter has a linkage for incrementally feeding a ribbon, a power roll rotated by a motor and a control member actuated by a printing mechanism for connecting the power roll to the linkage to incrementally feed the ribbon.... | 02/20/1979 |
| 4026404 | Apparatus for the bodily shifting of a printing roller An apparatus for the bodily shifting of a printing roller in parallelism with itself in which the roller has a first printing position and a second printing position and is mounted on connecting rods or levers which are actuated by eccentrics for movement... | 05/31/1977 |
