Okla. Stat. tit. 36, § 36-4003: Grace period

There shall be a provision that a grace period of thirty (30)

days, or, at the option of the insurer, of one month of not less

than thirty (30) days, shall be allowed within which the payment of

any premium after the first may be made, during which period of

grace the policy shall continue in full force; but if a claim arises

under the policy during such period of grace before the overdue

premium is paid the amount of such premium may be deducted from the

policy proceeds.