Columbia subject headings:
Conflict of laws--Patents--United States.
Plant breeders--Legal status, laws, etc.--United States.
Plant varieties--Patents--United States.
Plants, Cultivated--United States--Patents.
Harvard subject headings:
Conflict of laws--Patents--United States.
Conflict of laws--United States--Patents.
Plant breeders--Legal status, laws, etc.--United States.
Plant varieties--United States--Patents.
Plants, Cultivated--United States--Patents.
Princeton subject headings:
Conflict of laws--Patents--United States.
Patents.
Plant breeders--Legal status, laws, etc.--United States.
Plant varieties--United States--Patents.
Plants, Cultivated--United States--Patents.