Okla. Stat. tit. 20 § 106.5
Any transcript of notes, duly certified as correct by the reporter who took the evidence, and filed with the clerk of the court in which the cause was tried, shall be admissible as evidence in all cases, of like force and effect, as testimony taken in the cause by deposition, and subject to the same objection, a transcript of said notes may be incorporated into any appellate record. If any reporter ceases to be the official reporter of the court, and thereafter makes a transcript of the notes taken by him while acting as official reporter, he shall swear to the transcript as true and correct and when so verified, the transcript shall have the same force and effect as if certified while he was an official reporter.
A transcript of the notes of any reporter of the State Industrial Court, when certified or verified by such reporter who took the evidence in any hearing before such Industrial Court or any official thereof in any proceedings pending before such court, shall have the same force and effect as a transcript by a court reporter above mentioned, when such transcript is offered as a deposition in evidence in any subsequent trial or proceedings before any court of record wherein the parties are the same as the parties who took part in the proceedings before the State Industrial Court; that is, the same parties as the claimant and respondent before the Industrial Court; provided that, if such party, who is claimant before the Industrial Court, is deceased, then the provisions hereof shall apply if the subsequent action is by the personal representative of such deceased party in an action for wrongful death.
Okla. Stat. tit. 20, § 106.5