2022 15 USC 2505 – Research and development

2010 15 USC 2505 – Research and development

2013 15 USC 2505 – Research and development

2012 15 USC 2505 – Research and development

2014 15 USC 2505 – Research and development

2015 15 USC 2505 – Research and development

2017 15 USC 2505 – Research and development

2018 15 USC 2505 – Research and development

2020 15 USC 2505 – Research and development

2021 15 USC 2505 – Research and development