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| Number | Title | Issue Date |
| 7277817 | Position sensing device A position sensing device having an insulating board, a first conductive sensing element, a second conductive sensing element, an oscillator, conductive material, a differential amplifier, and a processor. The first and second spaced conductive sensing elements are ... | 10/02/2007 |
| 7170489 | Positioning a cursor on the display screen of a computer A computer system comprises a keyboard (11), a display screen (13), a first pair of position-sensing electrodes (18.1, 18.2), a second pair of position-sensing electrodes (20.1, 20.2), a signal injection electrode (22), and an osci... | 01/30/2007 |
