DM

David Margherio

ST Spartan Tool: 1 patents #3 of 10Top 30%
SP Spartan Tool Div. Of Pettibone: 1 patents #2 of 4Top 50%
📍 Ladd, IL: #1 of 6 inventorsTop 20%
🗺 Illinois: #34,584 of 84,256 inventorsTop 45%
Overall (All Time): #2,208,296 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6655228 Dual directional power feed Donald J. Borelli 2003-12-02
5309595 Drain cleaning apparatus Roy W. Salecker, Donald J. Borelli, Rockwell T. Sloter 1994-05-10