DK

Derrick Kraus

WS Wallace Computer Services: 1 patents #24 of 47Top 55%
Overall (All Time): #3,614,645 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6060428 Heat-sensitive chromogenic system John C. H. Chang, Donald J. Hoffmann, Ronald R. Garrison 2000-05-09