AV

Abraham Verhoeff

SL Shell Canada Limited: 1 patents #3 of 9Top 35%
SB Shell Internationale Research Maatschappij B.V.: 1 patents #62 of 211Top 30%
Overall (All Time): #2,333,678 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4876004 Topological separator — 1989-10-24
RE31307 Method for preparing clay-based grease compositions Kenneth A. MacKenzie 1983-07-12