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Protective cushioning
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Patent number 4,823,945
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Issue date Apr 25, 1989
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The Crowell Corporation
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Herbert B. Adelman
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Automatic packaging
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Patent number 4,601,157
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Issue date Jul 22, 1986
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The Crowell Corporation
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Herbert B. Adelman
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Protective material and use
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Patent number 4,584,225
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Issue date Apr 22, 1986
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The Crowell Corporation
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Herbert B. Adelman
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B32 - LAYERED PRODUCTS
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Sheet packaging material
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Patent number 4,321,297
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Issue date Mar 23, 1982
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The Crowell Corporation
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Herbert B. Adelman
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B32 - LAYERED PRODUCTS
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