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

image from Franklin M. Doolittle's 1927 patent application for binaural 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.

 
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