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.
1 approx 92 calories in a 2 oz, 57g, medium thick slice, of roast beef (from average round cuts). 2  approx 138 calories in 3 oz or 85g serving of roast beef (from average round cuts).