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Gray scale add-on
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Issue date Jan 27, 1998
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Canon, Inc.
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Alice M. d'Entremont
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G06 - COMPUTING CALCULATING COUNTING
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Electronic publishing
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Patent number 4,677,571
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Issue date Jun 30, 1987
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Rise Technology Inc.
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John H. Riseman
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G06 - COMPUTING CALCULATING COUNTING
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Electronic publishing
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Patent number 4,675,743
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Issue date Jun 23, 1987
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Rise Technology Inc.
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John H. Riseman
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G06 - COMPUTING CALCULATING COUNTING
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