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US3630124A
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Conversion attachment for a conventional nonwindow envelope machine
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US3598024A
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Envelope manufacture
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US3572222A
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Attachment for a conventional non-window envelope machine
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US3077821A
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Latex gumming attachment for envelope folding machines
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US2896539A
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Inking mechanism for printing machines
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US2843310A
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Shipment data holder
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US2872098A
|
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Combination envelope
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US2318997A
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Invoice container
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US2161124A
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Sheet-feeding mechanism
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US1679871A
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Machine for manufacturing book covers and the like
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US1745581A
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Envelope-fastener-applying mechanism
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US1544101A
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Envelope fastener and patch-applying machine
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US1619214A
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Machine for punching and reenforcing blanks
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US1501717A
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Envelope-fastener strip
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US1442923A
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Blank-feeding mechanism
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