Such notice and return shall be presumptive evidence of the regularity, legality and validity of all the official acts leading up to and constituting such resale. Within such thirty (30) days, the county treasurer shall execute, acknowledge and deliver to the purchaser or the purchaser's assigns, or to the board of county commissioners where such property has been bid off in the name of the county, a deed conveying the real estate thus resold. The issuance of such deed shall effect the cancellation and setting aside of all delinquent taxes, assessments, penalties and costs previously assessed or existing against the real estate, and of all outstanding individual and county tax sale certificates, and shall vest in the grantee an absolute and perfect title in fee simple to the real estate, subject to all claims which the state may have had on the real estate for taxes or other liens or encumbrances; provided, that all such claims which the state, municipality or both the state and the municipality may have had on the real estate for taxes or other liens or encumbrances shall be canceled and extinguished with respect to any deed conveying title to the board of county commissioners where such property was bid off in the name of the county. Twelve (12) months after the deed shall have been filed for record in the county clerk's office, no action shall be commenced to avoid or set aside the deed. Provided, that persons under legal disability shall have one (1) year after removal of such disability within which to redeem the real estate.
Okla. Stat. tit. 68, § 3131