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US3033110A
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Feed tray-control attachment for duplicating machines
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US3098650A
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Operating control mechanism for duplicating machines
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US3069159A
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Paper guide for the feeding tray of a duplicating machine
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US3068786A
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Sheet moistening means for duplicating machines
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US2937021A
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Copy sheet receiving tray for duplicating machines
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US2856847A
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Liquid process duplicating machine
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US2867169A
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Combined moistening and contact pressure control for liquid process duplicating machines
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US2813483A
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Margin control mechanism for duplicating machines
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US2808262A
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Feed tray side guide lock for duplicating machines
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US2722885A
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Pressure control for duplicating machines
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US2659304A
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Moistening mechanism for rotary duplicating machines
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US2722886A
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Roller moving means for rotary duplicating machine
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US2857159A
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Feed tray for duplicating machines
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US2622519A
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Moistening device for motor-driven duplicating machines
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US2597804A
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Drive and control means for sheet feeding rollers in duplicating apparatus
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US2572158A
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Moistening means for duplicating apparatus
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US2594179A
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Duplicating apparatus
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