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| Number | Title | Issue Date |
| 4773774 | Printer with erasing ribbon control function Disclosed is a printer having a correction ribbon tape for correcting printed characters. A plurality of characters printed in the same print position can be corrected in one step of feed of the correction ribbon tape.... | 09/27/1988 |
| 4405244 | Typewriter operating attachment providing for dead key operations A baseplate attachment (12) having actuator elements which extend into an electrical typewriter (13) to initiate operations in response to signals indicative of successive characters to be printed further provides for dead key print operations when desira... | 09/20/1983 |
| 4382705 | Typewriter with an erasing apparatus A typewriter with a character erasing apparatus capable of consecutively erasing a series of characters as well as a single character once printed on a sheet of printing paper. The typewriter is provided with a retaining crank movable to first, second and... | 05/10/1983 |
| 4309118 | Device for correction of misprint of a typewriter A correction device for a typewriter is disclosed. The correction device includes a correction key which is linked to the escapement device which normally advances the carriage each time a key is depressed. The correction key disengages the escapement dev... | 01/05/1982 |
