If the appeal is taken under Rule 1.85(b) by a public utility or public service corporation, the State of Oklahoma shall be made a party-appellee in the Supreme Court. Art. IX, Sec. 20, Okl.Const. All petitions, motions, and briefs of the appellant shall be served on the Attorney General and the Corporation Commission by service through its chairman or its authorized assistant in such matters.
Okla. Stat. tit. 12, app 1 R. 1.86