Yesterday on my way to Economy Lumber to get some stuff for our kitchen remodel, I snapped a shot of the 1/4 lb. Giant Burgers sign that Patrick suggested.
On the way home by a different route, I discovered that it's part of a chain, at least a small one. There's another on MacArthur in the Laurel district, and one on International. Which lead me to another sign discovery, Tom Spaulding's The NorCal Explorer. Besides some shots of signs in Oakland, he's got a ton of classic signs from Fresno and all over. If you like vintage signs, it's worth checking out.