Duffy’s restaurant chain using late founder’s vision to expand Posted on February 21, 2017 by Miami 1 Miami Miami News & Search 1 News - 1 eMovies - 1 eMusic - 1 eBooks - 1 Search Search for: Duffy’s sales grew 14 percent, to $130 million in 2016 from $114 million in 2015. 1 Miami Miami News & Search 1 News - 1 eMovies - 1 eMusic - 1 eBooks - 1 Search Search for: