DV

Darren E. Vengroff

GR Groupon: 1 patents #34 of 92Top 40%
Overall (2017): #443,731 of 506,227Top 90%
1
Patents 2017

Issued Patents 2017

Patent #TitleCo-InventorsDate
9614921 Facilitating user interactions based on proximity Jeffrey A. Holden 2017-04-04