Okla. Stat. tit. 42, § 42-111: Persons entitled to liens - Commencement of lien

Any person, firm or corporation, who shall thresh or combine

grain or seed for another shall have a lien for the value of his

services upon the grain or seed threshed or combined as provided for

in Section 2 of this act, (10989) lien to date from the commencement

of threshing.