Section 16-20-3
When Secretary of State issues patent.
The Secretary of State must issue patents, upon satisfactory evidence furnished him of full payment of purchase money to any person, agent or other officer legally authorized to receive such payment; and, upon proof of a mistake in the issue of any patent, he must correct the same or issue a new patent on the return of the original to his office.
(School Code 1927, §645; Code 1940, T. 52, §564.)