Okla. Stat. tit. 15, § 15-570: Partial invalidity of act

If any clause, sentence, paragraph or part of this act shall for

any reason be adjudged by any court of competent jurisdiction to be

invalid, such judgment shall not affect, impair or invalidate the

remainder thereof, but shall be confined in its operation to the

clause, sentence or paragraph or part thereof directly involved in

the controversy, in which such judgment shall have been rendered;

and any contract valid under and satisfying the requirements of the

remaining clauses, sentences, paragraphs or parts of this act shall

be valid and enforceable in the courts of the State.