I have another TradeMark #4: HY-FLO http://www.trademarkia.com/hyflo-85642970.html On Monday, June 04, 2012, a U.S. federal trademark registration was filed for HY-FLO by Alternative Hydrogen Solutions, LLC, Fayetteville, AR 72702. The USPTO has given the HY-FLO trade- mark serial number of 85642970. HY-Flo™ gets TM# 85642970 from USPTO on 6/4/12