Closing of the USPTO on
February 13, 2014      http://www.uspto.gov/web/offices/com/sol/og/2014/week19/TOC.htm#ref11
March 3, 2014            http://www.uspto.gov/web/offices/com/sol/og/2014/week19/TOC.htm#ref12
March 17, 2014          http://www.uspto.gov/web/offices/com/sol/og/2014/week19/TOC.htm#ref13