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Information gathering apparatus and method having multiple wireless communication options App 20040105411 - Boatwright, Darrell L. ;   et al. | 2004-06-03 |
Portable computerized data communication device App 20040093363 - Cargin, Keith K. JR. ;   et al. | 2004-05-13 |
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Hand-held computerized data collection terminal with rechargeable battery pack sensor and battery power conservation Grant 5,515,303 - Cargin, Jr. , et al. May 7, 1 | 1996-05-07 |
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