Columbia subject headings:
Patent laws and legislation--United States.
Patents--United States--Fees.
Trademarks--United States--Fees.
United States. Patent and Trademark Office.
Harvard subject headings:
Patent laws and legislation--United States.
Patents--Fees--United States.
Trademarks--Fees--United States.
Trademarks--Law and legislation--Fees--United States.
United States. Patent and Trademark Office.
Princeton subject headings:
Patent laws and legislation--United States.
Patents--United States--Fees.
Trademarks--United States--Fees.
United States. Patent and Trademark Office