RE

Robbyn L. Engen

3M: 2 patents #5,326 of 11,543Top 50%
Overall (All Time): #2,268,817 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5611825 Abrasive articles and methods of making same Jeffrey E. Ford 1997-03-18
5551961 Abrasive articles and methods of making same Douglas S. Spencer, Jeffrey E. Ford 1996-09-03