TK

Theodore E. Kessler

ES Educational Testing Service: 1 patents #128 of 260Top 50%
Overall (All Time): #3,667,920 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5987302 On-line essay evaluation system Gary Driscoll, Lou A. Hatfield, Arlene Johnson, Helen D. Kahn, David L. Kuntz +3 more 1999-11-16