Issued Patents 2016
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9476554 | Rectangular light duct extraction | David G. Freier, Vadim N. Savvateev | 2016-10-25 |
| 9360676 | Light duct tee splitter | David G. Freier | 2016-06-07 |
| 9353930 | Light duct tee extractor | David G. Freier | 2016-05-31 |
| 9335015 | Off-axis cassegrain solar collector | David G. Freier, Timothy L. Quinn, Byron E. Trotter | 2016-05-10 |
| D752773 | Bollard luminaire window | David G. Freier, Karl J. L. Geisler, Glendon D. Kappel | 2016-03-29 |