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Nesting drums
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Patent number 4,971,215
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Issue date Nov 20, 1990
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Grief Brothers Corporation
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Cesar Santoni
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Nesting drums-method of making the same
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Patent number 4,512,700
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Issue date Apr 23, 1985
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Greif Bros. Corporation
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Cesar Santoni
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Split ring locking assembly
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Patent number 4,314,720
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Issue date Feb 9, 1982
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Greif Bros. Corporation
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Cesar Santoni
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Drum container closing ring assembly
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Patent number 4,134,609
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Issue date Jan 16, 1979
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Greif Bros. Corporation
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Cesar Santoni
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Nestable drum
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Patent number 3,949,877
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Issue date Apr 13, 1976
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Greif Bros. Corporation
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Cesar Santoni
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL