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| Number | Title | Issue Date |
| 7920898 | Data entry systems A data entry system includes a hand held data entry unit having a reading sensor for sensing commands and/or data, rewritable storage for storing information relating to selectable items, a controller (a microprocessor or other processing circuitry) and a display sc... | 04/05/2011 |
| 7505785 | Data entry systems A data entry system includes a hand held data entry unit having a reading sensor for sensing commands and/or data, rewritable storage for storing information relating to selectable items, a controller (a microprocessor or other processing circuitry) and a display sc... | 03/17/2009 |
| 7139591 | Hand held telecommunications and data entry device A data entry system includes a hand held data entry unit having a reading sensor for sensing commands and/or data, rewritable storage for storing information relating to selectable items, a controller (a microprocessor or other processing circuitry) and a display sc... | 11/21/2006 |
| 6058304 | Data entry system A data entry system includes a hand held data entry unit having a reading sensor for sensing commands and/or data, rewritable storage for storing information relating to selectable items, a controller (a microprocessor or other processing circuitry) and a... | 05/02/2000 |
