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Tamper-resistant envelope
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Patent number 6,048,098
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Issue date Apr 11, 2000
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Automated container insert device
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Patent number 5,974,769
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Issue date Nov 2, 1999
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Tamper-resistant envelope
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Patent number 5,788,377
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Issue date Aug 4, 1998
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Tamper-resistant envelope closure
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Patent number 5,584,580
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Issue date Dec 17, 1996
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Envelope closure seal and method
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Patent number 5,045,040
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Issue date Sep 3, 1991
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Envelope closure seal and method
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Patent number 4,932,791
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Issue date Jun 12, 1990
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Uniflex, Inc.
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Kurt W. Vetter
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL