Okla. Stat. tit. 68, § 68-3027: Appeals - Finality of unappealed decision

Either the protestant or the county may appeal from the final

decision of the Court to the Supreme Court of the state, and it

shall be sufficient to perfect such appeal if the appellant shall,

within thirty (30) days from the date of such decision of the Court,

file with the Clerk of the Supreme Court a petition in error with a

copy of the order or decision appealed from. If no appeal be taken,

the decision of the Court shall be final.