Contemporary with the work of Case and Sponable was Charles A. Hoxie's Pallophotophone (from Greek roots meaning "shaking light sound"), manufactured by General Electric (GE). Similar to the Case infrared system used by the Navy, the Pallophotophone was also intended for wireless communications at sea, but was then adapted for recording speech. With GE's backing, Hoxie's invention was used in 1922–1923 to record then-Vice-president Calvin Coolidge and others for radio broadcasts.
