Richard Spikes was an African-American inventor created with  inventing the turn signal and the beer keg tap. Not a lot is known  about his personal life except that he was â¦ declared legally blind  in 1962, the same year he passed away. Answered.
There are 56 calories in 1 thin slice of Roast Beef. Calorie breakdown: 60% fat, 0% carbs, 40% protein.
There are about 50 calories per ounce in roast beef. It depends on how many ounces of beef you use on your sandwich. No not 50 calories it is 400 calories in a roast beef saâ¦ndwitch because if you put more than that on it you will get fat.