Okla. Stat. tit. 6, § 6-503: Trust companies - Branch offices

Nothing contained in this Code shall authorize trust companies,

covered by or eligible for insurance coverage by the Federal Deposit

Insurance Corporation, to establish branch offices within this

state. As used in this section, "branch office" includes, but is

not limited to, any additional agency, office or other facility

located within this state at which business is conducted. Provided,

however, this section shall not be effective as to any such "branch

office" in existence at the time and date of the enactment hereof,

nor shall it be so construed as to prohibit the establishment of

agents or agencies for the sole purpose of conducting the business

of title insurance or abstracting.