2024 26 CFR 1.174-2 – Definition of research and experimental expenditures

2023 26 CFR 1.174-2 – Definition of research and experimental expenditures

2022 26 CFR 1.174-2 – Definition of research and experimental expenditures

2021 26 CFR 1.174-2 – Definition of research and experimental expenditures

2015 26 CFR 1.174-2 – Definition of research and experimental expenditures

2014 26 CFR 1.174-2 – Definition of research and experimental expenditures

2010 26 CFR 1.174-2 – Definition of research and experimental expenditures

2009 26 CFR 1.174-2 – Definition of research and experimental expenditures.