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Suh, E., “Space efficient multi-sheet buffer module and modular printing system”, US 8,401,455
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Suh, E., Bober, H., Blitz, W., “Digital image printing job including monochromatic and color images”, US 8,284,416
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Suh, E., Bober, H., “Combined sheet buffer and inverter”, US 8,128,088
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Bober, H., Suh, E., “Deflecting nip sheet shingling buffer mechanism”, US 8,020,865
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Hoover, L., Bober, H., Suh, E., “Paper feeder for modular printers”, US 7,976,012
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Suh, E., “Double efficiency sheet buffer module and modular printing system with double efficiency”, US 7,946,582
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Suh, E., “An automotive suspension system for increasing rolling safety”, KR 10-0372415, US 6,428,025