July 5, 2007: Filed provisional U.S. Patent Application No. 60/958,369.

July 3, 2008: Filed nonprovisional U.S. Patent Application No. 12/217,477.

November 15, 2011: Filed continuation U.S. Patent Application No. 13/296,255.

November 15, 2011: U.S. Patent No. 8,059,823 issued.

March 5, 2013: U.S. Patent No. 8,391,499 issued.

September 24, 2016: Performed design-for-manufacuturability (DFM) revisions