On August 10, 1909, Leo Fender was born. Together with George Fullerton, Fender developed the first mass-produced solid-body electric guitar in 1948. Called the Fender Broadcaster (renamed the Telecaster in 1950), it was produced under the auspices of the Fender Electric Instruments Company, which Fender had formed in 1946. In 1951 the Fender Precision Bass, the world’s first electric bass guitar, was unveiled, and in 1954 the Fender Stratocaster was put on the market.
From the Colorado Blues Society’s newsletter of August 8, 2019: http://www.coblues.org