1 Tex. Admin. Code § 97.42
An irrevocable letter of credit established in accordance with §97.41 of this title (relating to Requirements of Irrevocable Letter of Credit) must be maintained for a period not to exceed two years after the registrant has formally terminated registration and only with the approval of the Office of the Secretary of State.
Source Note:The provisions of this §97.42 adopted to be effective September 7, 1988, 13 TexReg 4233.