2nd edition, 2007

John H. Hammond, Jr. (1888-1965) was, like Edison, Alexanderson and Charles F. Jenkins, something of a patenting machine.
Here we list his 536 patents, ranging from his 1912 patent for “Naval-war-game apparatus” to his 1968 patent for “Phase selective receiver with frequency control”. Patents are listed by title chronologically then alphabetically.

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