Question: The RL-83 Blindicide was produced by Mecar SA of Belgium and was an improved derivative of what man-portable recoilless anti-tank rocket launcher weapon, widely fielded by the United States Army?
Sentence (from "Clarence N. Hickman"): He is known for developing the bazooka man-portable recoilless antitank rocket launcher weapon, and the American Piano Company Model B player piano.
Relevant evidence: No