Columbia subject headings:
Law--United States--Periodicals.
Patent laws and legislation--United States.
Patents--Societies, etc.
United States. Patent Office.
Harvard subject headings:
Patent laws and legislation--United States.
Patents--Societies, etc.
United States. Patent Office
Princeton subject headings:
Patent laws and legislation--United States--Periodicals.
Periodicals.
Trademarks--United States--Periodicals.