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Square ended valve bag
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Patent number 4,685,148
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Issue date Aug 4, 1987
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Basic Packaging Systems, Inc.
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Oliver R. Titchenal
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Chain of open mouth bags
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Patent number 4,569,083
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Issue date Feb 4, 1986
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Basic Packaging Systems, Inc.
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Oliver R. Titchenal
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Square ended bag
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Patent number 4,524,459
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Issue date Jun 18, 1985
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Basic Packaging Systems, Inc.
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Oliver R. Titchenal
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Square ended bag
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Patent number 4,453,370
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Issue date Jun 12, 1984
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Basic Packaging Systems, Inc.
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Oliver R. Titchenal
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL