TK

Thomas Ketteringham

ML Martek Limited: 2 patents #5 of 15Top 35%
Overall (All Time): #1,654,415 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5311703 Multiple purpose tool grinding device — 1994-05-17
4961288 Apparatus for sharpening edge tools — 1990-10-09
4742648 Drill sharpening tool — 1988-05-10