Columbia subject headings:
Patent laws and legislation--United States.
Patent practice--United States.
Trademarks--United States.
Harvard subject headings:
Patent laws and legislation--United States.
Patent practice--United States.
Trademarks--Law and legislation--United States
Trademarks--United States
Princeton subject headings:
Patent laws and legislation--United States.
Patent practice--United States.
Trademarks--United States.