Versions of Oregon Statutes 12.270 - Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date on LawServer 2023 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2021 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2019 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2017 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2015 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2013 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date 2009 Oregon Statutes 12.270 – Conclusive presumption of validity of governmental subdivision boundary proceedings one year after effective date