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Necked container
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Patent number 4,753,364
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Issue date Jun 28, 1988
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Stoffel Technologies Inc.
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Hans F. Stoffel
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Method for making a necked container
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Patent number 4,527,412
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Issue date Jul 9, 1985
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Stoffel Technologies, Inc.
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Hans F. Stoffel
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Easy-open container wall
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Patent number 4,445,621
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Issue date May 1, 1984
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Stoffel Technologies, Inc.
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William T. Saunders
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL