DF

Daniel R. Ferrell

HI Hallmark Cards, Incorporated: 2 patents #69 of 288Top 25%
Overall (All Time): #2,036,253 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9135542 Handheld scanner device with display location database Gregory S. O'Dell, David E. Caldwell 2015-09-15
8190497 Handheld scanner device with display location database Gregory S. O'Dell, David E. Caldwell 2012-05-29