No regulation adopted after July 1, 1965, is valid unless adopted in substantial compliance with this chapter but no objection to any regulation on the ground of noncompliance with the procedural requirements of NRS 233B.060 to 233B.0617, inclusive, may be made more than 2 years after its effective date. Regulations in effect on July 1, 1965, continue in effect until amended or repealed in accordance with the provisions of this chapter, if an original and two copies were deposited with the Secretary of State on or before July 1, 1965.
NRS 233B.0617