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Michael Burton
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Chula Vista, CA, US
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last 30 patents
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Patent Grant
One-way valve with flapper for vacuum bag
Patent number
8,074,685
Issue date
Dec 13, 2011
Illinois Tool Works, Inc.
Martin Calvo
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Patents Applications
last 30 patents
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Patent Application
ONE-WAY VALVE WITH FLAPPER FOR VACUUM BAG
Publication number
20090257688
Publication date
Oct 15, 2009
Illinois Tool Works Inc.
Martin Calvo
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL