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Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 6892637 | Self-inking stamp with ink cartridge barrier A stamp pad holder for use in a self-inking hand stamp. The stamp pad holder has a stamp die box that holds a stamp forming material, ink cartridge and plastic within the die box. The stamp forming material is placed at the bottom of the die box. A pre-inked ink car... | 05/17/2005 |
| 5906161 | Ink roller assembly Disclosed are various embodiments of an ink roller assembly with a capillary ink metering unit and a surrounding porous ink retaining sleeve, wherein the unit is comprised of a pair of capillary sections connected to each other and wherein capillary secti... | 05/25/1999 |
| 4519312 | Inking unit A liquid transport mechanism for use particularly in transporting and evenly distributing printing ink in a rotary printing machine is disclosed. A plurality of generally cone shaped ink transport rollers are placed about the periphery of one or more ink ... | 05/28/1985 |
| 4266480 | Apparatus for controlling inking means In a machine having a printing cycle, and including an inking mechanism, there is provided apparatus for controlling operation of the inking mechanism. The control apparatus comprises a latch including a manually operable switch, a pulse generator coupled... | 05/12/1981 |
