1927 - Franklin M. Doolittle secured the first U.S. patents for binaural broadcasting, the forerunner of stereophonic broadcasting.

Doolittle was the founder of New Haven, Connecticut's radio station, WPAJ. It was renamed WDRC in 1925 and moved to Hartford in 1930.

Click here to read about Doolittle's other patents: 1921, 1924 & 1931.