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| Number | Title | Issue Date |
| 7477367 | Celestial object identification device A celestial object locating device according to the present disclosure enables a user to unambiguously identify one or more stars or other celestial objects. The celestial object locating device may also direct a user to a desired celestial object or objects. The de... | 01/13/2009 |
| 7471211 | Celestial object location device A hand-held electronic celestial object-locating device assists in identifying a celestial object or directing a user to a desired celestial object. The device is useful for locating or identifying any celestial object including stars, constellations, planets, comet... | 12/30/2008 |
| 7428780 | Viewing and display apparatus position determination algorithms Celestial object location devices with sensor arrays of having less that one sensor for each of three orthogonal components of gravity and magnetic field vectors. The accuracy of position sensing is enhanced by estimating “missing” sensor input based on input fr... | 09/30/2008 |
| 7155833 | Viewing and display apparatus position determination algorithms Celestial object location devices with sensor arrays of having less that one sensor for each of three orthogonal components of gravity and magnetic field vectors. The accuracy of position sensing is enhanced by estimating “missing” sensor input based on input fr... | 01/02/2007 |
| 7068180 | Celestial object location device A hand-held electronic celestial object-locating device assists in identifying a celestial object or directing a user to a desired celestial object. The device is useful for locating or identifying any celestial object including stars, constellations, planets, comet... | 06/27/2006 |
