(Businessweek) - Gov. Deval Patrick has signed into law a bill allowing beer and wine to be sold at more supermarkets in Massachusetts. The new law will gradually increase the number of liquor licenses that can be held by a single company. Companies that own multiple stores around the state can now sell beer and wine at no more than three of those stores. The bill -- which won the approval of the Massachusetts House and Senate -- would allow for two additional licenses in 2012, two in 2016 and two more in 2020.