Okla. Stat. tit. 16, § 16-15: Necessity of acknowledgment and recording - Condition for

judgment lien to be binding against third persons.

Except as hereinafter provided, no acknowledgment or recording

shall be necessary to the validity of any deed, mortgage, or

contract relating to real estate as between the parties thereto; but

no deed, mortgage, contract, bond, lease, or other instrument

relating to real estate other than a lease for a period not

exceeding one (1) year and accompanied by actual possession, shall

be valid as against third persons unless acknowledged and recorded

as herein provided. No judgment lien shall be binding against third

persons unless the judgment lienholder has filed his judgment in the

office of the county clerk as provided by and in accordance with

Section 706 of Title 12 of the Oklahoma Statutes.

R.L. 1910, § 1154; Laws 1992, c. 119, § 1, eff. Sept. 1, 1992; Laws

1993, c. 351, § 6, eff. Sept. 1, 1993.