US Patent D644742 Choral riser

Patent D644742 was granted and assigned to Amtab Manufacturing Corporation on September, 2011 by the United States Patent and Trademark Office.

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Patent Number

Patent Inventor Names

Doss Samikkannu0

Zelio Ferrarini0

Jeremias C. Rivera, Jr.0

Gregory Hanusiak0

Date of Patent

September 6, 2011

Patent Application Number

29372435

Date Filed

November 18, 2010

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