Columbia subject headings:
Competition.
Inventions--United States.
Patents--United States.
Technological innovations--United States.
United States--Economic policy.
Harvard subject headings:
Competition.
Inventions--United States
Patents--United States
Technological innovations--United States
United States--Economic policy.
Princeton subject headings:
Competition.
Inventions--United States.
Patents--United States.
Technological innovations--United States.
United States--Economic policy.