Radio phone receivingErich Hausmann, Louis Alan Hazeltine, Goldsmith, Alfred N. (Alfred Norton), 1888-1974, Hogan, John V. L. (John Vincent Lawless), 1890-, Morecroft, John H. (John Harold), 1881-1934, Frank Emanuel Canavaciol, Robert D. Gibson, Paul C. Hoernel · 1922 · Rights: US