Zipper storage bag

Zipper storage bag

Zipper storage bags, were patented by Robert W. Vergobbi on May 18, 1954. [ [http://www.freepatentsonline.com/6471402.html United States Patent 6471402] - Formed stacking element integral with plastic storage bags] In the same year, Minigrip licensed them as pencil bags. [ [http://www.minigripdirect.com minigripdirect.com] ] Not until 1968 did Dow Chemical Company (already known for Styrofoam and Saran Wrap) begin marketing for them. Design alterations have allowed for applications beyond household food storage. [ [http://www.gtzip.com Zipper Bags For Industrial and Commercial Use] ] The bags are known more commonly under the genericized trademark Ziploc.

References

External links

* http://www.grayspackaging.co.uk/top-slider-grip-bags---zip-lock-30-c.asp
* [http://www.elplast.org press to close zippers]


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