Adolph Rickenbacker

American manufacturer and electric guitar inventor (1887–1976)

Adolph Rickenbacker (born Adolf Rickenbacher, April 1, 1887 – March 21, 1976) was an American production engineer and machinist who, together with George Beauchamp, created the first electric string instrument, and co-founded the Rickenbacker guitar company, also with Beauchamp.²

From Wikipedia’s article on Adolph Rickenbacker (this version), CC BY-SA 4.0.

Born Apr 1, 1887, died Mar 21, 1976.¹