A tamper evident package has a first wall and a second wall facing the first wall. A zipper is provided at a top of the package. The first and second walls include portions that extend over the zipper and the first wall extension portion has a line of weakness that extends parallel to the zipper. A peel...http://www.google.es/patents/US6880973?utm_source=gb-gplus-sharePatente US6880973 - Tamper evident reclosable package
