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Handwriting capture device
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Patent number 5,539,159
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Issue date Jul 23, 1996
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NCR Corporation
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Robert L. Protheroe
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G06 - COMPUTING CALCULATING COUNTING
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Handwriting capture device
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Patent number 5,380,958
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Issue date Jan 10, 1995
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NCR Corporation
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Robert L. Protheroe
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G06 - COMPUTING CALCULATING COUNTING
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Handwriting capture device
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Patent number 5,227,590
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Issue date Jul 13, 1993
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NCR Corporation
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Robert L. Protheroe
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G06 - COMPUTING CALCULATING COUNTING
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Handwriting capture device
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Patent number 5,120,906
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Issue date Jun 9, 1992
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NCR Corporation
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Robert L. Protheroe
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G06 - COMPUTING CALCULATING COUNTING