DF

David G. Freier

3M: 6 patents #34 of 1,260Top 3%
Overall (2016): #20,661 of 481,213Top 5%
6
Patents 2016

Issued Patents 2016

Patent #TitleCo-InventorsDate
9476554 Rectangular light duct extraction Vadim N. Savvateev, Thomas R. Corrigan 2016-10-25
9464773 Illuminated light duct joint Karl J. L. Geisler 2016-10-11
9360676 Light duct tee splitter Thomas R. Corrigan 2016-06-07
9353930 Light duct tee extractor Thomas R. Corrigan 2016-05-31
9335015 Off-axis cassegrain solar collector Timothy L. Quinn, Thomas R. Corrigan, Byron E. Trotter 2016-05-10
D752773 Bollard luminaire window Thomas R. Corrigan, Karl J. L. Geisler, Glendon D. Kappel 2016-03-29