Okla. Stat. tit. 18, § 18-441-120: Service of process

SERVICE OF PROCESS.

(a) An agent for service of process appointed by a limited

cooperative association or foreign cooperative is an agent of the

association or foreign cooperative for service of process, notice,

or a demand required or permitted by law to be served upon the

association or foreign cooperative.

(b) If a limited cooperative association or foreign cooperative

does not appoint or maintain an agent for service of process in this

state or the agent for service of process cannot with reasonable

diligence be found at the address of the designated office on file

with the Secretary of State, the Secretary of State is an agent of

the association or foreign cooperative upon which process, notice,

or a demand may be served.

(c) Service of process, notice, or a demand on the Secretary of

State as agent of a limited cooperative association or foreign

cooperative may be made by delivering to the Secretary of State two

copies of the process, notice, or demand. The Secretary of State

shall forward one copy by registered or certified mail, return

receipt requested, to the association or foreign cooperative at its

principal office.

(d) Service is effected under subsection (c) of this section on

the earliest of:

(1) The date the limited cooperative association or foreign

cooperative receives the process, notice, or demand;

(2) The date shown on the return receipt, if signed on behalf

of the association or foreign cooperative; or

(3) Five (5) days after the process, notice, or demand is

deposited by the Secretary of State for delivery by the United

States Postal Service, if postage is prepaid to the address of the

principal office on file with the Secretary of State.

(e) The Secretary of State shall keep a record of each process,

notice, and demand served pursuant to this section and record the

time of, and the action taken regarding, the service.

(f) This section does not affect the right to serve process,

notice, or a demand in any other manner provided by law.