Okla. Stat. tit. 58, § 92

The district court must not receive or entertain a petition for the probate of a nuncupative will until the lapse of fourteen (14) days from the death of the testator, nor must such petition be at any time acted on, unless the testamentary words are or their substance is, reduced to writing and filed with the petition, nor until the surviving husband or wife, if any, and all other persons resident in the state or county, interested in the estate, are notified, as provided herein.