Invention & Innovation in the Radio Industry

agreement Alexanderson alternating current alternator American Marconi amplifier antenna apparatus application Armstrong AT&T Bell Telephone Bell Telephone Laboratories British Marconi cathode cent circuit commercial Commission competition concerns contributions Corporation of America Court cross-licensing detector elec Electric Company electro-magnetic engineering equipment expenses experimental Farnsworth Fessenden field Forest Company frequency modulation fundamental research Hazeltine Hazeltine Corporation Hertz heterodyne Ibid iconoscope important infringed innovation interest invention inventor laboratory lamp Langmuir later Lee de Forest license Lloyd Espenschied Marconi company ment method Navy neutrodyne operation original oscillations pany patent position period Philco plaintiff primarily problem purchased radio communications Radio Corporation radio industry radio manufacturing radio sets Radio Telephone RCA's receiving reception regenerative circuit royalty Sarnoff scientific scientists sell signal stations technical tele Telegraph Company Telephone company tion Total suits transmission transmitter triode United vacuum tube waves Westinghouse wire Wireless Telegraph York Zworykin