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Submission Zazzle.com convinced that depictions of Pi are protected intellectual property.->

Byteme writes: A number of Zazzle.com users have had their art and products removed from the site due to Paul Ingrisano, of Brooklyn New York, and a trademark under "Pi Productions" for a logo which consists of this freely available version of the pi symbolÏfrom the Wikimedia website combined with a period.
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A sine curve goes off to infinity, or at least the end of the blackboard. -- Prof. Steiner