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US2796686A
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Tag
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US2693174A
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Internal-combustion engine and method of operating the intake valve
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US2565444A
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Machine for forming, packing, and sealing containers
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US2589756A
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Heat-sealing machine
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US2554722A
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Method of forming cylindrical containers
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US2569964A
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Duplex bag and process of making same
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US2576322A
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Bag with vacuum sealed valve closure
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US2438981A
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Packaging method
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US2428441A
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Lamp failure switch
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US2454109A
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Crayon holder
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US2444762A
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Bag and process of making the same
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US2377533A
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Container
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US2437058A
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Collapsible container for air transportation of fluids
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US2385898A
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Snap-down bottom, flat-folded paperboard container
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US2436061A
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Liquidproof lined carton and blank for forming the same
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US2364576A
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Siftproof package and side seam therefor
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US2385897A
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Continuous filling and packaging machine
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US2377532A
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Method of fabricating collapsible tubes
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US2412544A
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Reusable collapsible liquid carrying and dispensing container
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US2326269A
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Lined carton
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