Columbia subject headings:
Environmental sciences--Technological innovations--United States.
Patents--United States.
Technology and state--United States.
Technology transfer--United States.
Harvard subject headings:
Environmental sciences--Technological innovations--United States.
Patents--United States
Technology and state--United States.
Technology transfer--United States
Princeton subject headings:
Environmental sciences--Technological innovations--United States.
Patents--United States.
Technology and state--United States.
Technology transfer--United States.