Okla. Stat. tit. 36, § 36-3608

A. No application for the issuance of any life insurance policy

or contract shall be admissible in evidence in any action relative

to such policy or contract, unless a true copy of the application

was attached to or otherwise made a part of the policy when issued.

This provision shall not apply to industrial life insurance

policies.

B. If any policy of life insurance delivered in this state is

reinstated or renewed, and the insured or the beneficiary or

assignee of the policy makes written request to the insurer for a

copy of the application, if any, for such reinstatement or renewal,

the insurer shall, within thirty (30) days after receipt of such

request at its home office or at any of its branch offices, deliver

or mail to the person making such request a copy of such

application. If such copy is not so delivered or mailed after

having been so requested, the insurer shall be precluded from

introducing the application in evidence in any action or proceeding

based upon or involving the policy or its reinstatement or renewal.

In the case of such a request from a beneficiary or assignee, the

time within which the insurer is required to furnish a copy of such

application shall not begin to run until after receipt of evidence

satisfactory to the insurer of the beneficiary's or assignee's

vested interest in the policy or contract.

C. As to kinds of insurance other than life insurance, no

application for insurance signed by or on behalf of the insured

shall be admissible in evidence in any action between the insured

and the insurer arising out of the policy so applied for, if the

insurer has failed, at expiration of thirty (30) days after receipt

by the insurer of written demand therefor by or on behalf of the

insured, to furnish to the insured a copy of such application

reproduced by any legible means.