| http://www.w3.org/ns/prov#value | - nsion gusseting systemUS8132395Jun 25, 2009Mar 13, 2012Frito-Lay North America, Inc.Variable tension gusseting systemEP0154873A1 *Feb 23, 1985Sep 18, 1985EFFEM GmbHMethod of making and filling a bag with a folded bottom from an endless tubular material which can be made from an endless flat material, device for carrying out this method and especially a bag with a folded bottom made by this methodE
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