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