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Patent Documents A collection of United States patent documents related to early radio and television broadcasting. DocumentsDate addedThe original Lee DeForest "Audion" patent. (Yes, we know the zero shouldn't prefix the number in the title. We did that to keep the patents in the proper order...)
Edwin H. Armstrong's first patent, for the superregenerative radio receiver.
Major Armstrong's patent for the superheterodyne receiver. While the courts overturned the Armstrong patent on a technicality, the industry has always considered him to be the inventor of the superhet.
Philo Farnsworth's first television patent, covering transmission systems.
Farnsworth's second patent, for receiving equipment.
Farnsworth's second patent, for television receiving equipment.
A 1928 Farnsworth patent.
The Farnsworth "Image Dissector".
The first Zworykin patent. This is the patent that, as far as we know, established RCA's claim that Zworykin invented television.
This patent covers early work of RCA's Otto Schade in electronic color television.
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| Random Thought |
"People who still have their ideals don't stand a chance in television..." Lou Grant, WJM-TV |
