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US1719947A
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Machine for making filler flats for packing cases
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US1643646A
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Sheet-feeding means
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US1639010A
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Machine for making one-piece window envelopes
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US1528637A
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Clutch
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US1494197A
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Machine for attaching strings to tags, envelope flaps, and the like
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US1462153A
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Cover-fastening device for paper pails
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US1425914A
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Reenforced blank material for the manufacture of paper boxes or containers
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US1492490A
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Machine for making double-faced cellular paper board
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US1343487A
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Variable automatic control mechanism
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US1408486A
|
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Mechanism for scoring paper board, pasteboard, or fiber board
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US1353087A
|
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Feed mechanism for slotting and creasing machines
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US1353086A
|
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Creasing and slotting machine
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US1404068A
|
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Mechanism for applying window patches to envelope material
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US1337734A
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Mechanism for making open-face envelops
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