Okla. Stat. tit. 58, § 58-414: Notice of order

The court shall cause copies of the order to show cause to be

published once in a newspaper and the hearing shall be held not less

than ten (10) days from the date of publication of the notice. The

court clerk, deputy court clerk, or an attorney shall mail a copy of

the order to all of the then known heirs, legatees, devisees, or

their guardians , whose addresses are known, at least ten (10) days

prior to the date set for hearing. The hearing shall not be held

less than ten (10) days from the date of mailing of the order. If

the executor or administrator files a verified petition for the

sale, setting forth therein the name or names of all of the known

heirs, legatees, and devisees obtainable by exercise of due

diligence, all of whom have joined in the petition or have signified

in writing their assent thereto, no notice shall be required and the

court shall proceed forthwith to hear the petition.

R.L. 1910, § 6374. Amended by Laws 1953, p. 238, § 29; Laws 1957,

p. 462, § 1; Laws 1959, p. 222, § 1; Laws 1963, c. 68, § 1, emerg.

eff. May 15, 1963; Laws 1969, c. 302, § 14, eff. Jan. 1, 1970; Laws

1995, c. 286, § 12, eff. July 1, 1995.