DC

David E. Caldwell

HI Hallmark Cards, Incorporated: 2 patents #69 of 288Top 25%
Overall (All Time): #1,522,950 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9135542 Handheld scanner device with display location database Gregory S. O'Dell, Daniel R. Ferrell 2015-09-15
8190497 Handheld scanner device with display location database Gregory S. O'Dell, Daniel R. Ferrell 2012-05-29
7418447 Natural language product comparison guide synthesizer Michael J. White, Tanya Korelsky 2008-08-26