(May 20, 2013 – Milton, NY) Sono-Tek Corporation (OTCQB: SOTK) today announced sales of $9,500,000 for the fiscal year ended February 28, 2013, compared to sales of $12,053,000 for the previous fiscal year, a decrease of 21%. We also announced net income of $132,000 or $.01 per share, versus $1,432,000 or $.10 per share for…