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Donald H. Zipper
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Western Springs, IL, US
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last 30 patents
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Patent Grant
Plastic closure and related container finish
Patent number
4,373,641
Issue date
Feb 15, 1983
The Continental Group, Inc.
John N. Banich
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Patent Grant
Expansion section for tamper-indicating ring of squeeze-off closure
Patent number
4,227,618
Issue date
Oct 14, 1980
The Continental Group, Inc.
Donald H. Zipper
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL