Easy Diner List of hamburger restaurants References External links 1986 establishments in California Fast-food chains of the United States Hamburger restaurants in the United States Nostalgia in the United States Restaurant chains in the United States Restaurant franchises Restaurants established in 1986 Restaurants in Greater Los Angeles Theme restaurants 2007 mergers and acquisitions 2013 mergers and acquisitions 2020 mergers and acquisitions Retro style Companies based in Hampden County, Massachusetts