2024 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2023 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2022 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2021 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2020 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2018 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2017 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2015 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2014 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2013 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2012 42 USC 17173 – Daylighting systems and direct solar light pipe technology

2010 42 USC 17173 – Daylighting systems and direct solar light pipe technology